81257280

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{383}}^1$

素因数の和:433

約数の個数: 224

約数和(自身を含む): 294948864

約数和(自身を除く): 213691584

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 17, 20, 24, 26, 30, 32, 34, 39, 40, 48, 51, 52, 60, 64, 65, 68, 78, 80, 85, 96, 102, 104, 120, 130, 136, 156, 160, 170, 192, 195, 204, 208, 221, 240, 255, 260, 272, 312, 320, 340, 383, 390, 408, 416, 442, 480, 510, 520, 544, 624, 663, 680, 766, 780, 816, 832, 884, 960, 1020, 1040, 1088, 1105, 1149, 1248, 1326, 1360, 1532, 1560, 1632, 1768, 1915, 2040, 2080, 2210, 2298, 2496, 2652, 2720, 3064, 3120, 3264, 3315, 3536, 3830, 4080, 4160, 4420, 4596, 4979, 5304, 5440, 5745, 6128, 6240, 6511, 6630, 7072, 7660, 8160, 8840, 9192, 9958, 10608, 11490, 12256, 12480, 13022, 13260, 14144, 14937, 15320, 16320, 17680, 18384, 19533, 19916, 21216, 22980, 24512, 24895, 26044, 26520, 29874, 30640, 32555, 35360, 36768, 39066, 39832, 42432, 45960, 49790, 52088, 53040, 59748, 61280, 65110, 70720, 73536, 74685, 78132, 79664, 84643, 91920, 97665, 99580, 104176, 106080, 119496, 122560, 130220, 149370, 156264, 159328, 169286, 183840, 195330, 199160, 208352, 212160, 238992, 253929, 260440, 298740, 312528, 318656, 338572, 367680, 390660, 398320, 416704, 423215, 477984, 507858, 520880, 597480, 625056, 677144, 781320, 796640, 846430, 955968, 1015716, 1041760, 1194960, 1250112, 1269645, 1354288, 1562640, 1593280, 1692860, 2031432, 2083520, 2389920, 2539290, 2708576, 3125280, 3385720, 4062864, 4779840, 5078580, 5417152, 6250560, 6771440, 8125728, 10157160, 13542880, 16251456, 20314320, 27085760, 40628640, 81257280]

約数ペア:

[(1, 81257280), (2, 40628640), (3, 27085760), (4, 20314320), (5, 16251456), (6, 13542880), (8, 10157160), (10, 8125728), (12, 6771440), (13, 6250560), (15, 5417152), (16, 5078580), (17, 4779840), (20, 4062864), (24, 3385720), (26, 3125280), (30, 2708576), (32, 2539290), (34, 2389920), (39, 2083520), (40, 2031432), (48, 1692860), (51, 1593280), (52, 1562640), (60, 1354288), (64, 1269645), (65, 1250112), (68, 1194960), (78, 1041760), (80, 1015716), (85, 955968), (96, 846430), (102, 796640), (104, 781320), (120, 677144), (130, 625056), (136, 597480), (156, 520880), (160, 507858), (170, 477984), (192, 423215), (195, 416704), (204, 398320), (208, 390660), (221, 367680), (240, 338572), (255, 318656), (260, 312528), (272, 298740), (312, 260440), (320, 253929), (340, 238992), (383, 212160), (390, 208352), (408, 199160), (416, 195330), (442, 183840), (480, 169286), (510, 159328), (520, 156264), (544, 149370), (624, 130220), (663, 122560), (680, 119496), (766, 106080), (780, 104176), (816, 99580), (832, 97665), (884, 91920), (960, 84643), (1020, 79664), (1040, 78132), (1088, 74685), (1105, 73536), (1149, 70720), (1248, 65110), (1326, 61280), (1360, 59748), (1532, 53040), (1560, 52088), (1632, 49790), (1768, 45960), (1915, 42432), (2040, 39832), (2080, 39066), (2210, 36768), (2298, 35360), (2496, 32555), (2652, 30640), (2720, 29874), (3064, 26520), (3120, 26044), (3264, 24895), (3315, 24512), (3536, 22980), (3830, 21216), (4080, 19916), (4160, 19533), (4420, 18384), (4596, 17680), (4979, 16320), (5304, 15320), (5440, 14937), (5745, 14144), (6128, 13260), (6240, 13022), (6511, 12480), (6630, 12256), (7072, 11490), (7660, 10608), (8160, 9958), (8840, 9192)]