638120

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1$

素因数の和:114

約数の個数: 64

約数和(自身を含む): 1710720

約数和(自身を除く): 1072600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 53, 56, 70, 86, 106, 140, 172, 212, 215, 265, 280, 301, 344, 371, 424, 430, 530, 602, 742, 860, 1060, 1204, 1484, 1505, 1720, 1855, 2120, 2279, 2408, 2968, 3010, 3710, 4558, 6020, 7420, 9116, 11395, 12040, 14840, 15953, 18232, 22790, 31906, 45580, 63812, 79765, 91160, 127624, 159530, 319060, 638120]

約数ペア:

[(1, 638120), (2, 319060), (4, 159530), (5, 127624), (7, 91160), (8, 79765), (10, 63812), (14, 45580), (20, 31906), (28, 22790), (35, 18232), (40, 15953), (43, 14840), (53, 12040), (56, 11395), (70, 9116), (86, 7420), (106, 6020), (140, 4558), (172, 3710), (212, 3010), (215, 2968), (265, 2408), (280, 2279), (301, 2120), (344, 1855), (371, 1720), (424, 1505), (430, 1484), (530, 1204), (602, 1060), (742, 860)]