20972575840

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{47717}}^1$

素因数の和:47840

約数の個数: 96

約数和(自身を含む): 51514825824

約数和(自身を除く): 30542249984

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 67, 80, 82, 134, 160, 164, 205, 268, 328, 335, 410, 536, 656, 670, 820, 1072, 1312, 1340, 1640, 2144, 2680, 2747, 3280, 5360, 5494, 6560, 10720, 10988, 13735, 21976, 27470, 43952, 47717, 54940, 87904, 95434, 109880, 190868, 219760, 238585, 381736, 439520, 477170, 763472, 954340, 1526944, 1908680, 1956397, 3197039, 3817360, 3912794, 6394078, 7634720, 7825588, 9781985, 12788156, 15651176, 15985195, 19563970, 25576312, 31302352, 31970390, 39127940, 51152624, 62604704, 63940780, 78255880, 102305248, 127881560, 131078599, 156511760, 255763120, 262157198, 313023520, 511526240, 524314396, 655392995, 1048628792, 1310785990, 2097257584, 2621571980, 4194515168, 5243143960, 10486287920, 20972575840]

約数ペア:

[(1, 20972575840), (2, 10486287920), (4, 5243143960), (5, 4194515168), (8, 2621571980), (10, 2097257584), (16, 1310785990), (20, 1048628792), (32, 655392995), (40, 524314396), (41, 511526240), (67, 313023520), (80, 262157198), (82, 255763120), (134, 156511760), (160, 131078599), (164, 127881560), (205, 102305248), (268, 78255880), (328, 63940780), (335, 62604704), (410, 51152624), (536, 39127940), (656, 31970390), (670, 31302352), (820, 25576312), (1072, 19563970), (1312, 15985195), (1340, 15651176), (1640, 12788156), (2144, 9781985), (2680, 7825588), (2747, 7634720), (3280, 6394078), (5360, 3912794), (5494, 3817360), (6560, 3197039), (10720, 1956397), (10988, 1908680), (13735, 1526944), (21976, 954340), (27470, 763472), (43952, 477170), (47717, 439520), (54940, 381736), (87904, 238585), (95434, 219760), (109880, 190868)]