18875645240

素因数分解:

$2^3\times 5^1\times {\mathrm{443}}^1\times {\mathrm{1065217}}^1$

素因数の和:1065671

約数の個数: 32

約数和(自身を含む): 42566111280

約数和(自身を除く): 23690466040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 443, 886, 1772, 2215, 3544, 4430, 8860, 17720, 1065217, 2130434, 4260868, 5326085, 8521736, 10652170, 21304340, 42608680, 471891131, 943782262, 1887564524, 2359455655, 3775129048, 4718911310, 9437822620, 18875645240]

約数ペア:

[(1, 18875645240), (2, 9437822620), (4, 4718911310), (5, 3775129048), (8, 2359455655), (10, 1887564524), (20, 943782262), (40, 471891131), (443, 42608680), (886, 21304340), (1772, 10652170), (2215, 8521736), (3544, 5326085), (4430, 4260868), (8860, 2130434), (17720, 1065217)]