18909186560

素因数分解:

$2^9\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{21661}}^1$

素因数の和:21726

約数の個数: 160

約数和(自身を含む): 51057160704

約数和(自身を除く): 32147974144

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 32, 40, 44, 55, 62, 64, 80, 88, 110, 124, 128, 155, 160, 176, 220, 248, 256, 310, 320, 341, 352, 440, 496, 512, 620, 640, 682, 704, 880, 992, 1240, 1280, 1364, 1408, 1705, 1760, 1984, 2480, 2560, 2728, 2816, 3410, 3520, 3968, 4960, 5456, 5632, 6820, 7040, 7936, 9920, 10912, 13640, 14080, 15872, 19840, 21661, 21824, 27280, 28160, 39680, 43322, 43648, 54560, 79360, 86644, 87296, 108305, 109120, 173288, 174592, 216610, 218240, 238271, 346576, 433220, 436480, 476542, 671491, 693152, 866440, 872960, 953084, 1191355, 1342982, 1386304, 1732880, 1906168, 2382710, 2685964, 2772608, 3357455, 3465760, 3812336, 4765420, 5371928, 5545216, 6714910, 6931520, 7386401, 7624672, 9530840, 10743856, 11090432, 13429820, 13863040, 14772802, 15249344, 19061680, 21487712, 26859640, 27726080, 29545604, 30498688, 36932005, 38123360, 42975424, 53719280, 55452160, 59091208, 60997376, 73864010, 76246720, 85950848, 107438560, 118182416, 121994752, 147728020, 152493440, 171901696, 214877120, 236364832, 295456040, 304986880, 343803392, 429754240, 472729664, 590912080, 609973760, 859508480, 945459328, 1181824160, 1719016960, 1890918656, 2363648320, 3781837312, 4727296640, 9454593280, 18909186560]

約数ペア:

[(1, 18909186560), (2, 9454593280), (4, 4727296640), (5, 3781837312), (8, 2363648320), (10, 1890918656), (11, 1719016960), (16, 1181824160), (20, 945459328), (22, 859508480), (31, 609973760), (32, 590912080), (40, 472729664), (44, 429754240), (55, 343803392), (62, 304986880), (64, 295456040), (80, 236364832), (88, 214877120), (110, 171901696), (124, 152493440), (128, 147728020), (155, 121994752), (160, 118182416), (176, 107438560), (220, 85950848), (248, 76246720), (256, 73864010), (310, 60997376), (320, 59091208), (341, 55452160), (352, 53719280), (440, 42975424), (496, 38123360), (512, 36932005), (620, 30498688), (640, 29545604), (682, 27726080), (704, 26859640), (880, 21487712), (992, 19061680), (1240, 15249344), (1280, 14772802), (1364, 13863040), (1408, 13429820), (1705, 11090432), (1760, 10743856), (1984, 9530840), (2480, 7624672), (2560, 7386401), (2728, 6931520), (2816, 6714910), (3410, 5545216), (3520, 5371928), (3968, 4765420), (4960, 3812336), (5456, 3465760), (5632, 3357455), (6820, 2772608), (7040, 2685964), (7936, 2382710), (9920, 1906168), (10912, 1732880), (13640, 1386304), (14080, 1342982), (15872, 1191355), (19840, 953084), (21661, 872960), (21824, 866440), (27280, 693152), (28160, 671491), (39680, 476542), (43322, 436480), (43648, 433220), (54560, 346576), (79360, 238271), (86644, 218240), (87296, 216610), (108305, 174592), (109120, 173288)]