20873490

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{1471}}^1$

素因数の和:1535

約数の個数: 64

約数和(自身を含む): 55959552

約数和(自身を除く): 35086062

約数列:

[1, 2, 3, 5, 6, 10, 11, 15, 22, 30, 33, 43, 55, 66, 86, 110, 129, 165, 215, 258, 330, 430, 473, 645, 946, 1290, 1419, 1471, 2365, 2838, 2942, 4413, 4730, 7095, 7355, 8826, 14190, 14710, 16181, 22065, 32362, 44130, 48543, 63253, 80905, 97086, 126506, 161810, 189759, 242715, 316265, 379518, 485430, 632530, 695783, 948795, 1391566, 1897590, 2087349, 3478915, 4174698, 6957830, 10436745, 20873490]

約数ペア:

[(1, 20873490), (2, 10436745), (3, 6957830), (5, 4174698), (6, 3478915), (10, 2087349), (11, 1897590), (15, 1391566), (22, 948795), (30, 695783), (33, 632530), (43, 485430), (55, 379518), (66, 316265), (86, 242715), (110, 189759), (129, 161810), (165, 126506), (215, 97086), (258, 80905), (330, 63253), (430, 48543), (473, 44130), (645, 32362), (946, 22065), (1290, 16181), (1419, 14710), (1471, 14190), (2365, 8826), (2838, 7355), (2942, 7095), (4413, 4730)]