19701560

素因数分解:

$2^3\times 5^1\times {\mathrm{269}}^1\times {\mathrm{1831}}^1$

素因数の和:2111

約数の個数: 32

約数和(自身を含む): 44517600

約数和(自身を除く): 24816040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 269, 538, 1076, 1345, 1831, 2152, 2690, 3662, 5380, 7324, 9155, 10760, 14648, 18310, 36620, 73240, 492539, 985078, 1970156, 2462695, 3940312, 4925390, 9850780, 19701560]

約数ペア:

[(1, 19701560), (2, 9850780), (4, 4925390), (5, 3940312), (8, 2462695), (10, 1970156), (20, 985078), (40, 492539), (269, 73240), (538, 36620), (1076, 18310), (1345, 14648), (1831, 10760), (2152, 9155), (2690, 7324), (3662, 5380)]