21575320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{41491}}^1$

素因数の和:41515

約数の個数: 32

約数和(自身を含む): 52279920

約数和(自身を除く): 30704600

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 41491, 82982, 165964, 207455, 331928, 414910, 539383, 829820, 1078766, 1659640, 2157532, 2696915, 4315064, 5393830, 10787660, 21575320]

約数ペア:

[(1, 21575320), (2, 10787660), (4, 5393830), (5, 4315064), (8, 2696915), (10, 2157532), (13, 1659640), (20, 1078766), (26, 829820), (40, 539383), (52, 414910), (65, 331928), (104, 207455), (130, 165964), (260, 82982), (520, 41491)]