25895480

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2621}}^1$

素因数の和:2664

約数の個数: 64

約数和(自身を含む): 66074400

約数和(自身を除く): 40178920

約数列:

[1, 2, 4, 5, 8, 10, 13, 19, 20, 26, 38, 40, 52, 65, 76, 95, 104, 130, 152, 190, 247, 260, 380, 494, 520, 760, 988, 1235, 1976, 2470, 2621, 4940, 5242, 9880, 10484, 13105, 20968, 26210, 34073, 49799, 52420, 68146, 99598, 104840, 136292, 170365, 199196, 248995, 272584, 340730, 398392, 497990, 647387, 681460, 995980, 1294774, 1362920, 1991960, 2589548, 3236935, 5179096, 6473870, 12947740, 25895480]

約数ペア:

[(1, 25895480), (2, 12947740), (4, 6473870), (5, 5179096), (8, 3236935), (10, 2589548), (13, 1991960), (19, 1362920), (20, 1294774), (26, 995980), (38, 681460), (40, 647387), (52, 497990), (65, 398392), (76, 340730), (95, 272584), (104, 248995), (130, 199196), (152, 170365), (190, 136292), (247, 104840), (260, 99598), (380, 68146), (494, 52420), (520, 49799), (760, 34073), (988, 26210), (1235, 20968), (1976, 13105), (2470, 10484), (2621, 9880), (4940, 5242)]