81227440

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{4679}}^1$

素因数の和:4730

約数の個数: 80

約数和(自身を含む): 222842880

約数和(自身を除く): 141615440

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 31, 35, 40, 56, 62, 70, 80, 112, 124, 140, 155, 217, 248, 280, 310, 434, 496, 560, 620, 868, 1085, 1240, 1736, 2170, 2480, 3472, 4340, 4679, 8680, 9358, 17360, 18716, 23395, 32753, 37432, 46790, 65506, 74864, 93580, 131012, 145049, 163765, 187160, 262024, 290098, 327530, 374320, 524048, 580196, 655060, 725245, 1015343, 1160392, 1310120, 1450490, 2030686, 2320784, 2620240, 2900980, 4061372, 5076715, 5801960, 8122744, 10153430, 11603920, 16245488, 20306860, 40613720, 81227440]

約数ペア:

[(1, 81227440), (2, 40613720), (4, 20306860), (5, 16245488), (7, 11603920), (8, 10153430), (10, 8122744), (14, 5801960), (16, 5076715), (20, 4061372), (28, 2900980), (31, 2620240), (35, 2320784), (40, 2030686), (56, 1450490), (62, 1310120), (70, 1160392), (80, 1015343), (112, 725245), (124, 655060), (140, 580196), (155, 524048), (217, 374320), (248, 327530), (280, 290098), (310, 262024), (434, 187160), (496, 163765), (560, 145049), (620, 131012), (868, 93580), (1085, 74864), (1240, 65506), (1736, 46790), (2170, 37432), (2480, 32753), (3472, 23395), (4340, 18716), (4679, 17360), (8680, 9358)]