21101390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{43}}^1\times {\mathrm{1583}}^1$

素因数の和:1664

約数の個数: 32

約数和(自身を含む): 40144896

約数和(自身を除く): 19043506

約数列:

[1, 2, 5, 10, 31, 43, 62, 86, 155, 215, 310, 430, 1333, 1583, 2666, 3166, 6665, 7915, 13330, 15830, 49073, 68069, 98146, 136138, 245365, 340345, 490730, 680690, 2110139, 4220278, 10550695, 21101390]

約数ペア:

[(1, 21101390), (2, 10550695), (5, 4220278), (10, 2110139), (31, 680690), (43, 490730), (62, 340345), (86, 245365), (155, 136138), (215, 98146), (310, 68069), (430, 49073), (1333, 15830), (1583, 13330), (2666, 7915), (3166, 6665)]