81538320

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{7901}}^1$

素因数の和:7960

約数の個数: 80

約数和(自身を含む): 258679872

約数和(自身を除く): 177141552

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 43, 48, 60, 80, 86, 120, 129, 172, 215, 240, 258, 344, 430, 516, 645, 688, 860, 1032, 1290, 1720, 2064, 2580, 3440, 5160, 7901, 10320, 15802, 23703, 31604, 39505, 47406, 63208, 79010, 94812, 118515, 126416, 158020, 189624, 237030, 316040, 339743, 379248, 474060, 632080, 679486, 948120, 1019229, 1358972, 1698715, 1896240, 2038458, 2717944, 3397430, 4076916, 5096145, 5435888, 6794860, 8153832, 10192290, 13589720, 16307664, 20384580, 27179440, 40769160, 81538320]

約数ペア:

[(1, 81538320), (2, 40769160), (3, 27179440), (4, 20384580), (5, 16307664), (6, 13589720), (8, 10192290), (10, 8153832), (12, 6794860), (15, 5435888), (16, 5096145), (20, 4076916), (24, 3397430), (30, 2717944), (40, 2038458), (43, 1896240), (48, 1698715), (60, 1358972), (80, 1019229), (86, 948120), (120, 679486), (129, 632080), (172, 474060), (215, 379248), (240, 339743), (258, 316040), (344, 237030), (430, 189624), (516, 158020), (645, 126416), (688, 118515), (860, 94812), (1032, 79010), (1290, 63208), (1720, 47406), (2064, 39505), (2580, 31604), (3440, 23703), (5160, 15802), (7901, 10320)]