21287310

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{257}}^1$

素因数の和:529

約数の個数: 64

約数和(自身を含む): 56173824

約数和(自身を除く): 34886514

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 55, 66, 110, 165, 251, 257, 330, 502, 514, 753, 771, 1255, 1285, 1506, 1542, 2510, 2570, 2761, 2827, 3765, 3855, 5522, 5654, 7530, 7710, 8283, 8481, 13805, 14135, 16566, 16962, 27610, 28270, 41415, 42405, 64507, 82830, 84810, 129014, 193521, 322535, 387042, 645070, 709577, 967605, 1419154, 1935210, 2128731, 3547885, 4257462, 7095770, 10643655, 21287310]

約数ペア:

[(1, 21287310), (2, 10643655), (3, 7095770), (5, 4257462), (6, 3547885), (10, 2128731), (11, 1935210), (15, 1419154), (22, 967605), (30, 709577), (33, 645070), (55, 387042), (66, 322535), (110, 193521), (165, 129014), (251, 84810), (257, 82830), (330, 64507), (502, 42405), (514, 41415), (753, 28270), (771, 27610), (1255, 16962), (1285, 16566), (1506, 14135), (1542, 13805), (2510, 8481), (2570, 8283), (2761, 7710), (2827, 7530), (3765, 5654), (3855, 5522)]