654320420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{24917}}^1$

素因数の和:25040

約数の個数: 48

約数和(自身を含む): 1494481968

約数和(自身を除く): 840161548

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 101, 130, 202, 260, 404, 505, 1010, 1313, 2020, 2626, 5252, 6565, 13130, 24917, 26260, 49834, 99668, 124585, 249170, 323921, 498340, 647842, 1295684, 1619605, 2516617, 3239210, 5033234, 6478420, 10066468, 12583085, 25166170, 32716021, 50332340, 65432042, 130864084, 163580105, 327160210, 654320420]

約数ペア:

[(1, 654320420), (2, 327160210), (4, 163580105), (5, 130864084), (10, 65432042), (13, 50332340), (20, 32716021), (26, 25166170), (52, 12583085), (65, 10066468), (101, 6478420), (130, 5033234), (202, 3239210), (260, 2516617), (404, 1619605), (505, 1295684), (1010, 647842), (1313, 498340), (2020, 323921), (2626, 249170), (5252, 124585), (6565, 99668), (13130, 49834), (24917, 26260)]