25787320

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{491}}^1$

素因数の和:616

約数の個数: 64

約数和(自身を含む): 63231840

約数和(自身を除く): 37444520

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 101, 104, 130, 202, 260, 404, 491, 505, 520, 808, 982, 1010, 1313, 1964, 2020, 2455, 2626, 3928, 4040, 4910, 5252, 6383, 6565, 9820, 10504, 12766, 13130, 19640, 25532, 26260, 31915, 49591, 51064, 52520, 63830, 99182, 127660, 198364, 247955, 255320, 396728, 495910, 644683, 991820, 1289366, 1983640, 2578732, 3223415, 5157464, 6446830, 12893660, 25787320]

約数ペア:

[(1, 25787320), (2, 12893660), (4, 6446830), (5, 5157464), (8, 3223415), (10, 2578732), (13, 1983640), (20, 1289366), (26, 991820), (40, 644683), (52, 495910), (65, 396728), (101, 255320), (104, 247955), (130, 198364), (202, 127660), (260, 99182), (404, 63830), (491, 52520), (505, 51064), (520, 49591), (808, 31915), (982, 26260), (1010, 25532), (1313, 19640), (1964, 13130), (2020, 12766), (2455, 10504), (2626, 9820), (3928, 6565), (4040, 6383), (4910, 5252)]