21979360

素因数分解:

$2^5\times 5^1\times {\mathrm{13}}^1\times {\mathrm{10567}}^1$

素因数の和:10595

約数の個数: 48

約数和(自身を含む): 55925856

約数和(自身を除く): 33946496

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 65, 80, 104, 130, 160, 208, 260, 416, 520, 1040, 2080, 10567, 21134, 42268, 52835, 84536, 105670, 137371, 169072, 211340, 274742, 338144, 422680, 549484, 686855, 845360, 1098968, 1373710, 1690720, 2197936, 2747420, 4395872, 5494840, 10989680, 21979360]

約数ペア:

[(1, 21979360), (2, 10989680), (4, 5494840), (5, 4395872), (8, 2747420), (10, 2197936), (13, 1690720), (16, 1373710), (20, 1098968), (26, 845360), (32, 686855), (40, 549484), (52, 422680), (65, 338144), (80, 274742), (104, 211340), (130, 169072), (160, 137371), (208, 105670), (260, 84536), (416, 52835), (520, 42268), (1040, 21134), (2080, 10567)]