12220990

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{131}}^1\times {\mathrm{491}}^1$

素因数の和:648

約数の個数: 32

約数和(自身を含む): 23379840

約数和(自身を除く): 11158850

約数列:

[1, 2, 5, 10, 19, 38, 95, 131, 190, 262, 491, 655, 982, 1310, 2455, 2489, 4910, 4978, 9329, 12445, 18658, 24890, 46645, 64321, 93290, 128642, 321605, 643210, 1222099, 2444198, 6110495, 12220990]

約数ペア:

[(1, 12220990), (2, 6110495), (5, 2444198), (10, 1222099), (19, 643210), (38, 321605), (95, 128642), (131, 93290), (190, 64321), (262, 46645), (491, 24890), (655, 18658), (982, 12445), (1310, 9329), (2455, 4978), (2489, 4910)]