20688730

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{293}}^1\times {\mathrm{307}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 39118464

約数和(自身を除く): 18429734

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 293, 307, 586, 614, 1465, 1535, 2930, 3070, 6739, 7061, 13478, 14122, 33695, 35305, 67390, 70610, 89951, 179902, 449755, 899510, 2068873, 4137746, 10344365, 20688730]

約数ペア:

[(1, 20688730), (2, 10344365), (5, 4137746), (10, 2068873), (23, 899510), (46, 449755), (115, 179902), (230, 89951), (293, 70610), (307, 67390), (586, 35305), (614, 33695), (1465, 14122), (1535, 13478), (2930, 7061), (3070, 6739)]