21302730

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{257}}^1\times {\mathrm{307}}^1$

素因数の和:580

約数の個数: 64

約数和(自身を含む): 57214080

約数和(自身を除く): 35911350

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 135, 257, 270, 307, 514, 614, 771, 921, 1285, 1535, 1542, 1842, 2313, 2570, 2763, 3070, 3855, 4605, 4626, 5526, 6939, 7710, 8289, 9210, 11565, 13815, 13878, 16578, 23130, 27630, 34695, 41445, 69390, 78899, 82890, 157798, 236697, 394495, 473394, 710091, 788990, 1183485, 1420182, 2130273, 2366970, 3550455, 4260546, 7100910, 10651365, 21302730]

約数ペア:

[(1, 21302730), (2, 10651365), (3, 7100910), (5, 4260546), (6, 3550455), (9, 2366970), (10, 2130273), (15, 1420182), (18, 1183485), (27, 788990), (30, 710091), (45, 473394), (54, 394495), (90, 236697), (135, 157798), (257, 82890), (270, 78899), (307, 69390), (514, 41445), (614, 34695), (771, 27630), (921, 23130), (1285, 16578), (1535, 13878), (1542, 13815), (1842, 11565), (2313, 9210), (2570, 8289), (2763, 7710), (3070, 6939), (3855, 5526), (4605, 4626)]