205775440

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{241}}^1\times {\mathrm{821}}^1$

素因数の和:1088

約数の個数: 80

約数和(自身を含む): 517998096

約数和(自身を除く): 312222656

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 241, 260, 482, 520, 821, 964, 1040, 1205, 1642, 1928, 2410, 3133, 3284, 3856, 4105, 4820, 6266, 6568, 8210, 9640, 10673, 12532, 13136, 15665, 16420, 19280, 21346, 25064, 31330, 32840, 42692, 50128, 53365, 62660, 65680, 85384, 106730, 125320, 170768, 197861, 213460, 250640, 395722, 426920, 791444, 853840, 989305, 1582888, 1978610, 2572193, 3165776, 3957220, 5144386, 7914440, 10288772, 12860965, 15828880, 20577544, 25721930, 41155088, 51443860, 102887720, 205775440]

約数ペア:

[(1, 205775440), (2, 102887720), (4, 51443860), (5, 41155088), (8, 25721930), (10, 20577544), (13, 15828880), (16, 12860965), (20, 10288772), (26, 7914440), (40, 5144386), (52, 3957220), (65, 3165776), (80, 2572193), (104, 1978610), (130, 1582888), (208, 989305), (241, 853840), (260, 791444), (482, 426920), (520, 395722), (821, 250640), (964, 213460), (1040, 197861), (1205, 170768), (1642, 125320), (1928, 106730), (2410, 85384), (3133, 65680), (3284, 62660), (3856, 53365), (4105, 50128), (4820, 42692), (6266, 32840), (6568, 31330), (8210, 25064), (9640, 21346), (10673, 19280), (12532, 16420), (13136, 15665)]