71209720

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2179}}^1$

素因数の和:2252

約数の個数: 64

約数和(自身を含む): 172656000

約数和(自身を除く): 101446280

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 43, 76, 86, 95, 152, 172, 190, 215, 344, 380, 430, 760, 817, 860, 1634, 1720, 2179, 3268, 4085, 4358, 6536, 8170, 8716, 10895, 16340, 17432, 21790, 32680, 41401, 43580, 82802, 87160, 93697, 165604, 187394, 207005, 331208, 374788, 414010, 468485, 749576, 828020, 936970, 1656040, 1780243, 1873940, 3560486, 3747880, 7120972, 8901215, 14241944, 17802430, 35604860, 71209720]

約数ペア:

[(1, 71209720), (2, 35604860), (4, 17802430), (5, 14241944), (8, 8901215), (10, 7120972), (19, 3747880), (20, 3560486), (38, 1873940), (40, 1780243), (43, 1656040), (76, 936970), (86, 828020), (95, 749576), (152, 468485), (172, 414010), (190, 374788), (215, 331208), (344, 207005), (380, 187394), (430, 165604), (760, 93697), (817, 87160), (860, 82802), (1634, 43580), (1720, 41401), (2179, 32680), (3268, 21790), (4085, 17432), (4358, 16340), (6536, 10895), (8170, 8716)]