84981520

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1993}}^1$

素因数の和:2060

約数の個数: 80

約数和(自身を含む): 218079792

約数和(自身を除く): 133098272

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 41, 52, 65, 80, 82, 104, 130, 164, 205, 208, 260, 328, 410, 520, 533, 656, 820, 1040, 1066, 1640, 1993, 2132, 2665, 3280, 3986, 4264, 5330, 7972, 8528, 9965, 10660, 15944, 19930, 21320, 25909, 31888, 39860, 42640, 51818, 79720, 81713, 103636, 129545, 159440, 163426, 207272, 259090, 326852, 408565, 414544, 518180, 653704, 817130, 1036360, 1062269, 1307408, 1634260, 2072720, 2124538, 3268520, 4249076, 5311345, 6537040, 8498152, 10622690, 16996304, 21245380, 42490760, 84981520]

約数ペア:

[(1, 84981520), (2, 42490760), (4, 21245380), (5, 16996304), (8, 10622690), (10, 8498152), (13, 6537040), (16, 5311345), (20, 4249076), (26, 3268520), (40, 2124538), (41, 2072720), (52, 1634260), (65, 1307408), (80, 1062269), (82, 1036360), (104, 817130), (130, 653704), (164, 518180), (205, 414544), (208, 408565), (260, 326852), (328, 259090), (410, 207272), (520, 163426), (533, 159440), (656, 129545), (820, 103636), (1040, 81713), (1066, 79720), (1640, 51818), (1993, 42640), (2132, 39860), (2665, 31888), (3280, 25909), (3986, 21320), (4264, 19930), (5330, 15944), (7972, 10660), (8528, 9965)]