20888890

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{3583}}^1$

素因数の和:3654

約数の個数: 32

約数和(自身を含む): 41803776

約数和(自身を除く): 20914886

約数列:

[1, 2, 5, 10, 11, 22, 53, 55, 106, 110, 265, 530, 583, 1166, 2915, 3583, 5830, 7166, 17915, 35830, 39413, 78826, 189899, 197065, 379798, 394130, 949495, 1898990, 2088889, 4177778, 10444445, 20888890]

約数ペア:

[(1, 20888890), (2, 10444445), (5, 4177778), (10, 2088889), (11, 1898990), (22, 949495), (53, 394130), (55, 379798), (106, 197065), (110, 189899), (265, 78826), (530, 39413), (583, 35830), (1166, 17915), (2915, 7166), (3583, 5830)]