86720720

素因数分解:

$2^4\times 5^1\times {\mathrm{53}}^1\times {\mathrm{113}}^1\times {\mathrm{181}}^1$

素因数の和:360

約数の個数: 80

約数和(自身を含む): 208392912

約数和(自身を除く): 121672192

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 53, 80, 106, 113, 181, 212, 226, 265, 362, 424, 452, 530, 565, 724, 848, 904, 905, 1060, 1130, 1448, 1808, 1810, 2120, 2260, 2896, 3620, 4240, 4520, 5989, 7240, 9040, 9593, 11978, 14480, 19186, 20453, 23956, 29945, 38372, 40906, 47912, 47965, 59890, 76744, 81812, 95824, 95930, 102265, 119780, 153488, 163624, 191860, 204530, 239560, 327248, 383720, 409060, 479120, 767440, 818120, 1084009, 1636240, 2168018, 4336036, 5420045, 8672072, 10840090, 17344144, 21680180, 43360360, 86720720]

約数ペア:

[(1, 86720720), (2, 43360360), (4, 21680180), (5, 17344144), (8, 10840090), (10, 8672072), (16, 5420045), (20, 4336036), (40, 2168018), (53, 1636240), (80, 1084009), (106, 818120), (113, 767440), (181, 479120), (212, 409060), (226, 383720), (265, 327248), (362, 239560), (424, 204530), (452, 191860), (530, 163624), (565, 153488), (724, 119780), (848, 102265), (904, 95930), (905, 95824), (1060, 81812), (1130, 76744), (1448, 59890), (1808, 47965), (1810, 47912), (2120, 40906), (2260, 38372), (2896, 29945), (3620, 23956), (4240, 20453), (4520, 19186), (5989, 14480), (7240, 11978), (9040, 9593)]