20155189840

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{1391933}}^1$

素因数の和:1392127

約数の個数: 40

約数和(自身を含む): 47119749768

約数和(自身を除く): 26964559928

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 7240, 14480, 1391933, 2783866, 5567732, 6959665, 11135464, 13919330, 22270928, 27838660, 55677320, 111354640, 251939873, 503879746, 1007759492, 1259699365, 2015518984, 2519398730, 4031037968, 5038797460, 10077594920, 20155189840]

約数ペア:

[(1, 20155189840), (2, 10077594920), (4, 5038797460), (5, 4031037968), (8, 2519398730), (10, 2015518984), (16, 1259699365), (20, 1007759492), (40, 503879746), (80, 251939873), (181, 111354640), (362, 55677320), (724, 27838660), (905, 22270928), (1448, 13919330), (1810, 11135464), (2896, 6959665), (3620, 5567732), (7240, 2783866), (14480, 1391933)]