71272720

素因数分解:

$2^4\times 5^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{991}}^1$

素因数の和:1064

約数の個数: 80

約数和(自身を含む): 177131520

約数和(自身を除く): 105858800

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 31, 40, 58, 62, 80, 116, 124, 145, 155, 232, 248, 290, 310, 464, 496, 580, 620, 899, 991, 1160, 1240, 1798, 1982, 2320, 2480, 3596, 3964, 4495, 4955, 7192, 7928, 8990, 9910, 14384, 15856, 17980, 19820, 28739, 30721, 35960, 39640, 57478, 61442, 71920, 79280, 114956, 122884, 143695, 153605, 229912, 245768, 287390, 307210, 459824, 491536, 574780, 614420, 890909, 1149560, 1228840, 1781818, 2299120, 2457680, 3563636, 4454545, 7127272, 8909090, 14254544, 17818180, 35636360, 71272720]

約数ペア:

[(1, 71272720), (2, 35636360), (4, 17818180), (5, 14254544), (8, 8909090), (10, 7127272), (16, 4454545), (20, 3563636), (29, 2457680), (31, 2299120), (40, 1781818), (58, 1228840), (62, 1149560), (80, 890909), (116, 614420), (124, 574780), (145, 491536), (155, 459824), (232, 307210), (248, 287390), (290, 245768), (310, 229912), (464, 153605), (496, 143695), (580, 122884), (620, 114956), (899, 79280), (991, 71920), (1160, 61442), (1240, 57478), (1798, 39640), (1982, 35960), (2320, 30721), (2480, 28739), (3596, 19820), (3964, 17980), (4495, 15856), (4955, 14384), (7192, 9910), (7928, 8990)]