407571320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{783791}}^1$

素因数の和:783815

約数の個数: 32

約数和(自身を含む): 987577920

約数和(自身を除く): 580006600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 783791, 1567582, 3135164, 3918955, 6270328, 7837910, 10189283, 15675820, 20378566, 31351640, 40757132, 50946415, 81514264, 101892830, 203785660, 407571320]

約数ペア:

[(1, 407571320), (2, 203785660), (4, 101892830), (5, 81514264), (8, 50946415), (10, 40757132), (13, 31351640), (20, 20378566), (26, 15675820), (40, 10189283), (52, 7837910), (65, 6270328), (104, 3918955), (130, 3135164), (260, 1567582), (520, 783791)]