20878810

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{1433}}^1$

素因数の和:1518

約数の個数: 32

約数和(自身を含む): 39647232

約数和(自身を除く): 18768422

約数列:

[1, 2, 5, 10, 31, 47, 62, 94, 155, 235, 310, 470, 1433, 1457, 2866, 2914, 7165, 7285, 14330, 14570, 44423, 67351, 88846, 134702, 222115, 336755, 444230, 673510, 2087881, 4175762, 10439405, 20878810]

約数ペア:

[(1, 20878810), (2, 10439405), (5, 4175762), (10, 2087881), (31, 673510), (47, 444230), (62, 336755), (94, 222115), (155, 134702), (235, 88846), (310, 67351), (470, 44423), (1433, 14570), (1457, 14330), (2866, 7285), (2914, 7165)]