21404580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{53}}^2\times {\mathrm{127}}^1$

素因数の和:245

約数の個数: 72

約数和(自身を含む): 61565952

約数和(自身を除く): 40161372

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 53, 60, 106, 127, 159, 212, 254, 265, 318, 381, 508, 530, 635, 636, 762, 795, 1060, 1270, 1524, 1590, 1905, 2540, 2809, 3180, 3810, 5618, 6731, 7620, 8427, 11236, 13462, 14045, 16854, 20193, 26924, 28090, 33655, 33708, 40386, 42135, 56180, 67310, 80772, 84270, 100965, 134620, 168540, 201930, 356743, 403860, 713486, 1070229, 1426972, 1783715, 2140458, 3567430, 4280916, 5351145, 7134860, 10702290, 21404580]

約数ペア:

[(1, 21404580), (2, 10702290), (3, 7134860), (4, 5351145), (5, 4280916), (6, 3567430), (10, 2140458), (12, 1783715), (15, 1426972), (20, 1070229), (30, 713486), (53, 403860), (60, 356743), (106, 201930), (127, 168540), (159, 134620), (212, 100965), (254, 84270), (265, 80772), (318, 67310), (381, 56180), (508, 42135), (530, 40386), (635, 33708), (636, 33655), (762, 28090), (795, 26924), (1060, 20193), (1270, 16854), (1524, 14045), (1590, 13462), (1905, 11236), (2540, 8427), (2809, 7620), (3180, 6731), (3810, 5618)]