20197944520

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{761}}^1\times {\mathrm{1187}}^1$

素因数の和:2015

約数の個数: 128

約数和(自身を含む): 50187392640

約数和(自身を除く): 29989448120

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 43, 52, 65, 86, 104, 130, 172, 215, 260, 344, 430, 520, 559, 761, 860, 1118, 1187, 1522, 1720, 2236, 2374, 2795, 3044, 3805, 4472, 4748, 5590, 5935, 6088, 7610, 9496, 9893, 11180, 11870, 15220, 15431, 19786, 22360, 23740, 30440, 30862, 32723, 39572, 47480, 49465, 51041, 61724, 65446, 77155, 79144, 98930, 102082, 123448, 130892, 154310, 163615, 197860, 204164, 255205, 261784, 308620, 327230, 395720, 408328, 425399, 510410, 617240, 654460, 663533, 850798, 903307, 1020820, 1308920, 1327066, 1701596, 1806614, 2041640, 2126995, 2654132, 3317665, 3403192, 3613228, 4253990, 4516535, 5308264, 6635330, 7226456, 8507980, 9033070, 11742991, 13270660, 17015960, 18066140, 23485982, 26541320, 36132280, 38842201, 46971964, 58714955, 77684402, 93943928, 117429910, 155368804, 194211005, 234859820, 310737608, 388422010, 469719640, 504948613, 776844020, 1009897226, 1553688040, 2019794452, 2524743065, 4039588904, 5049486130, 10098972260, 20197944520]

約数ペア:

[(1, 20197944520), (2, 10098972260), (4, 5049486130), (5, 4039588904), (8, 2524743065), (10, 2019794452), (13, 1553688040), (20, 1009897226), (26, 776844020), (40, 504948613), (43, 469719640), (52, 388422010), (65, 310737608), (86, 234859820), (104, 194211005), (130, 155368804), (172, 117429910), (215, 93943928), (260, 77684402), (344, 58714955), (430, 46971964), (520, 38842201), (559, 36132280), (761, 26541320), (860, 23485982), (1118, 18066140), (1187, 17015960), (1522, 13270660), (1720, 11742991), (2236, 9033070), (2374, 8507980), (2795, 7226456), (3044, 6635330), (3805, 5308264), (4472, 4516535), (4748, 4253990), (5590, 3613228), (5935, 3403192), (6088, 3317665), (7610, 2654132), (9496, 2126995), (9893, 2041640), (11180, 1806614), (11870, 1701596), (15220, 1327066), (15431, 1308920), (19786, 1020820), (22360, 903307), (23740, 850798), (30440, 663533), (30862, 654460), (32723, 617240), (39572, 510410), (47480, 425399), (49465, 408328), (51041, 395720), (61724, 327230), (65446, 308620), (77155, 261784), (79144, 255205), (98930, 204164), (102082, 197860), (123448, 163615), (130892, 154310)]