21706700

素因数分解:

$2^2\times 5^2\times {\mathrm{131}}^1\times {\mathrm{1657}}^1$

素因数の和:1802

約数の個数: 36

約数和(自身を含む): 47491752

約数和(自身を除く): 25785052

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 131, 262, 524, 655, 1310, 1657, 2620, 3275, 3314, 6550, 6628, 8285, 13100, 16570, 33140, 41425, 82850, 165700, 217067, 434134, 868268, 1085335, 2170670, 4341340, 5426675, 10853350, 21706700]

約数ペア:

[(1, 21706700), (2, 10853350), (4, 5426675), (5, 4341340), (10, 2170670), (20, 1085335), (25, 868268), (50, 434134), (100, 217067), (131, 165700), (262, 82850), (524, 41425), (655, 33140), (1310, 16570), (1657, 13100), (2620, 8285), (3275, 6628), (3314, 6550)]