618380

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{631}}^1$

素因数の和:654

約数の個数: 36

約数和(自身を含む): 1513008

約数和(自身を除く): 894628

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 631, 980, 1262, 2524, 3155, 4417, 6310, 8834, 12620, 17668, 22085, 30919, 44170, 61838, 88340, 123676, 154595, 309190, 618380]

約数ペア:

[(1, 618380), (2, 309190), (4, 154595), (5, 123676), (7, 88340), (10, 61838), (14, 44170), (20, 30919), (28, 22085), (35, 17668), (49, 12620), (70, 8834), (98, 6310), (140, 4417), (196, 3155), (245, 2524), (490, 1262), (631, 980)]