81882320

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{1831}}^1$

素因数の和:1900

約数の個数: 80

約数和(自身を含む): 209903232

約数和(自身を除く): 128020912

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 43, 52, 65, 80, 86, 104, 130, 172, 208, 215, 260, 344, 430, 520, 559, 688, 860, 1040, 1118, 1720, 1831, 2236, 2795, 3440, 3662, 4472, 5590, 7324, 8944, 9155, 11180, 14648, 18310, 22360, 23803, 29296, 36620, 44720, 47606, 73240, 78733, 95212, 119015, 146480, 157466, 190424, 238030, 314932, 380848, 393665, 476060, 629864, 787330, 952120, 1023529, 1259728, 1574660, 1904240, 2047058, 3149320, 4094116, 5117645, 6298640, 8188232, 10235290, 16376464, 20470580, 40941160, 81882320]

約数ペア:

[(1, 81882320), (2, 40941160), (4, 20470580), (5, 16376464), (8, 10235290), (10, 8188232), (13, 6298640), (16, 5117645), (20, 4094116), (26, 3149320), (40, 2047058), (43, 1904240), (52, 1574660), (65, 1259728), (80, 1023529), (86, 952120), (104, 787330), (130, 629864), (172, 476060), (208, 393665), (215, 380848), (260, 314932), (344, 238030), (430, 190424), (520, 157466), (559, 146480), (688, 119015), (860, 95212), (1040, 78733), (1118, 73240), (1720, 47606), (1831, 44720), (2236, 36620), (2795, 29296), (3440, 23803), (3662, 22360), (4472, 18310), (5590, 14648), (7324, 11180), (8944, 9155)]