21203860

素因数分解:

$2^2\times 5^1\times {\mathrm{331}}^1\times {\mathrm{3203}}^1$

素因数の和:3543

約数の個数: 24

約数和(自身を含む): 44676576

約数和(自身を除く): 23472716

約数列:

[1, 2, 4, 5, 10, 20, 331, 662, 1324, 1655, 3203, 3310, 6406, 6620, 12812, 16015, 32030, 64060, 1060193, 2120386, 4240772, 5300965, 10601930, 21203860]

約数ペア:

[(1, 21203860), (2, 10601930), (4, 5300965), (5, 4240772), (10, 2120386), (20, 1060193), (331, 64060), (662, 32030), (1324, 16015), (1655, 12812), (3203, 6620), (3310, 6406)]