81626720

素因数分解:

$2^5\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{2351}}^1$

素因数の和:2404

約数の個数: 96

約数和(自身を含む): 227598336

約数和(自身を除く): 145971616

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 32, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 160, 217, 224, 248, 280, 310, 434, 496, 560, 620, 868, 992, 1085, 1120, 1240, 1736, 2170, 2351, 2480, 3472, 4340, 4702, 4960, 6944, 8680, 9404, 11755, 16457, 17360, 18808, 23510, 32914, 34720, 37616, 47020, 65828, 72881, 75232, 82285, 94040, 131656, 145762, 164570, 188080, 263312, 291524, 329140, 364405, 376160, 510167, 526624, 583048, 658280, 728810, 1020334, 1166096, 1316560, 1457620, 2040668, 2332192, 2550835, 2633120, 2915240, 4081336, 5101670, 5830480, 8162672, 10203340, 11660960, 16325344, 20406680, 40813360, 81626720]

約数ペア:

[(1, 81626720), (2, 40813360), (4, 20406680), (5, 16325344), (7, 11660960), (8, 10203340), (10, 8162672), (14, 5830480), (16, 5101670), (20, 4081336), (28, 2915240), (31, 2633120), (32, 2550835), (35, 2332192), (40, 2040668), (56, 1457620), (62, 1316560), (70, 1166096), (80, 1020334), (112, 728810), (124, 658280), (140, 583048), (155, 526624), (160, 510167), (217, 376160), (224, 364405), (248, 329140), (280, 291524), (310, 263312), (434, 188080), (496, 164570), (560, 145762), (620, 131656), (868, 94040), (992, 82285), (1085, 75232), (1120, 72881), (1240, 65828), (1736, 47020), (2170, 37616), (2351, 34720), (2480, 32914), (3472, 23510), (4340, 18808), (4702, 17360), (4960, 16457), (6944, 11755), (8680, 9404)]