8621720

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{409}}^1$

素因数の和:468

約数の個数: 64

約数和(自身を含む): 21254400

約数和(自身を除く): 12632680

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 31, 34, 40, 62, 68, 85, 124, 136, 155, 170, 248, 310, 340, 409, 527, 620, 680, 818, 1054, 1240, 1636, 2045, 2108, 2635, 3272, 4090, 4216, 5270, 6953, 8180, 10540, 12679, 13906, 16360, 21080, 25358, 27812, 34765, 50716, 55624, 63395, 69530, 101432, 126790, 139060, 215543, 253580, 278120, 431086, 507160, 862172, 1077715, 1724344, 2155430, 4310860, 8621720]

約数ペア:

[(1, 8621720), (2, 4310860), (4, 2155430), (5, 1724344), (8, 1077715), (10, 862172), (17, 507160), (20, 431086), (31, 278120), (34, 253580), (40, 215543), (62, 139060), (68, 126790), (85, 101432), (124, 69530), (136, 63395), (155, 55624), (170, 50716), (248, 34765), (310, 27812), (340, 25358), (409, 21080), (527, 16360), (620, 13906), (680, 12679), (818, 10540), (1054, 8180), (1240, 6953), (1636, 5270), (2045, 4216), (2108, 4090), (2635, 3272)]