20508717280

素因数分解:

$2^5\times 5^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{103}}^1\times {\mathrm{887}}^1$

素因数の和:1089

約数の個数: 192

約数和(自身を含む): 51944675328

約数和(自身を除く): 31435958048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 61, 80, 92, 103, 115, 122, 160, 184, 206, 230, 244, 305, 368, 412, 460, 488, 515, 610, 736, 824, 887, 920, 976, 1030, 1220, 1403, 1648, 1774, 1840, 1952, 2060, 2369, 2440, 2806, 3296, 3548, 3680, 4120, 4435, 4738, 4880, 5612, 6283, 7015, 7096, 8240, 8870, 9476, 9760, 11224, 11845, 12566, 14030, 14192, 16480, 17740, 18952, 20401, 22448, 23690, 25132, 28060, 28384, 31415, 35480, 37904, 40802, 44896, 47380, 50264, 54107, 56120, 62830, 70960, 75808, 81604, 91361, 94760, 100528, 102005, 108214, 112240, 125660, 141920, 144509, 163208, 182722, 189520, 201056, 204010, 216428, 224480, 251320, 270535, 289018, 326416, 365444, 379040, 408020, 432856, 456805, 502640, 541070, 578036, 652832, 722545, 730888, 816040, 865712, 913610, 1005280, 1082140, 1156072, 1244461, 1445090, 1461776, 1632080, 1731424, 1827220, 2101303, 2164280, 2312144, 2488922, 2890180, 2923552, 3264160, 3654440, 4202606, 4328560, 4624288, 4977844, 5573021, 5780360, 6222305, 7308880, 8405212, 8657120, 9955688, 10506515, 11146042, 11560720, 12444610, 14617760, 16810424, 19911376, 21013030, 22292084, 23121440, 24889220, 27865105, 33620848, 39822752, 42026060, 44584168, 49778440, 55730210, 67241696, 84052120, 89168336, 99556880, 111460420, 128179483, 168104240, 178336672, 199113760, 222920840, 256358966, 336208480, 445841680, 512717932, 640897415, 891683360, 1025435864, 1281794830, 2050871728, 2563589660, 4101743456, 5127179320, 10254358640, 20508717280]

約数ペア:

[(1, 20508717280), (2, 10254358640), (4, 5127179320), (5, 4101743456), (8, 2563589660), (10, 2050871728), (16, 1281794830), (20, 1025435864), (23, 891683360), (32, 640897415), (40, 512717932), (46, 445841680), (61, 336208480), (80, 256358966), (92, 222920840), (103, 199113760), (115, 178336672), (122, 168104240), (160, 128179483), (184, 111460420), (206, 99556880), (230, 89168336), (244, 84052120), (305, 67241696), (368, 55730210), (412, 49778440), (460, 44584168), (488, 42026060), (515, 39822752), (610, 33620848), (736, 27865105), (824, 24889220), (887, 23121440), (920, 22292084), (976, 21013030), (1030, 19911376), (1220, 16810424), (1403, 14617760), (1648, 12444610), (1774, 11560720), (1840, 11146042), (1952, 10506515), (2060, 9955688), (2369, 8657120), (2440, 8405212), (2806, 7308880), (3296, 6222305), (3548, 5780360), (3680, 5573021), (4120, 4977844), (4435, 4624288), (4738, 4328560), (4880, 4202606), (5612, 3654440), (6283, 3264160), (7015, 2923552), (7096, 2890180), (8240, 2488922), (8870, 2312144), (9476, 2164280), (9760, 2101303), (11224, 1827220), (11845, 1731424), (12566, 1632080), (14030, 1461776), (14192, 1445090), (16480, 1244461), (17740, 1156072), (18952, 1082140), (20401, 1005280), (22448, 913610), (23690, 865712), (25132, 816040), (28060, 730888), (28384, 722545), (31415, 652832), (35480, 578036), (37904, 541070), (40802, 502640), (44896, 456805), (47380, 432856), (50264, 408020), (54107, 379040), (56120, 365444), (62830, 326416), (70960, 289018), (75808, 270535), (81604, 251320), (91361, 224480), (94760, 216428), (100528, 204010), (102005, 201056), (108214, 189520), (112240, 182722), (125660, 163208), (141920, 144509)]