21815692

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{131}}^1$

素因数の和:262

約数の個数: 48

約数和(自身を含む): 42577920

約数和(自身を除く): 20762228

約数列:

[1, 2, 4, 17, 31, 34, 62, 68, 79, 124, 131, 158, 262, 316, 524, 527, 1054, 1343, 2108, 2227, 2449, 2686, 4061, 4454, 4898, 5372, 8122, 8908, 9796, 10349, 16244, 20698, 41396, 41633, 69037, 83266, 138074, 166532, 175933, 276148, 320819, 351866, 641638, 703732, 1283276, 5453923, 10907846, 21815692]

約数ペア:

[(1, 21815692), (2, 10907846), (4, 5453923), (17, 1283276), (31, 703732), (34, 641638), (62, 351866), (68, 320819), (79, 276148), (124, 175933), (131, 166532), (158, 138074), (262, 83266), (316, 69037), (524, 41633), (527, 41396), (1054, 20698), (1343, 16244), (2108, 10349), (2227, 9796), (2449, 8908), (2686, 8122), (4061, 5372), (4454, 4898)]