18871970

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{179}}^1\times {\mathrm{811}}^1$

素因数の和:1010

約数の個数: 32

約数和(自身を含む): 36832320

約数和(自身を除く): 17960350

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 179, 358, 811, 895, 1622, 1790, 2327, 4055, 4654, 8110, 10543, 11635, 21086, 23270, 52715, 105430, 145169, 290338, 725845, 1451690, 1887197, 3774394, 9435985, 18871970]

約数ペア:

[(1, 18871970), (2, 9435985), (5, 3774394), (10, 1887197), (13, 1451690), (26, 725845), (65, 290338), (130, 145169), (179, 105430), (358, 52715), (811, 23270), (895, 21086), (1622, 11635), (1790, 10543), (2327, 8110), (4055, 4654)]