21371090

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{5303}}^1$

素因数の和:5354

約数の個数: 32

約数和(自身を含む): 42771456

約数和(自身を除く): 21400366

約数列:

[1, 2, 5, 10, 13, 26, 31, 62, 65, 130, 155, 310, 403, 806, 2015, 4030, 5303, 10606, 26515, 53030, 68939, 137878, 164393, 328786, 344695, 689390, 821965, 1643930, 2137109, 4274218, 10685545, 21371090]

約数ペア:

[(1, 21371090), (2, 10685545), (5, 4274218), (10, 2137109), (13, 1643930), (26, 821965), (31, 689390), (62, 344695), (65, 328786), (130, 164393), (155, 137878), (310, 68939), (403, 53030), (806, 26515), (2015, 10606), (4030, 5303)]