21131376

素因数分解:

$2^4\times 3^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{1031}}^1$

素因数の和:1110

約数の個数: 80

約数和(自身を含む): 63472128

約数和(自身を除く): 42340752

約数列:

[1, 2, 3, 4, 6, 7, 8, 12, 14, 16, 21, 24, 28, 42, 48, 56, 61, 84, 112, 122, 168, 183, 244, 336, 366, 427, 488, 732, 854, 976, 1031, 1281, 1464, 1708, 2062, 2562, 2928, 3093, 3416, 4124, 5124, 6186, 6832, 7217, 8248, 10248, 12372, 14434, 16496, 20496, 21651, 24744, 28868, 43302, 49488, 57736, 62891, 86604, 115472, 125782, 173208, 188673, 251564, 346416, 377346, 440237, 503128, 754692, 880474, 1006256, 1320711, 1509384, 1760948, 2641422, 3018768, 3521896, 5282844, 7043792, 10565688, 21131376]

約数ペア:

[(1, 21131376), (2, 10565688), (3, 7043792), (4, 5282844), (6, 3521896), (7, 3018768), (8, 2641422), (12, 1760948), (14, 1509384), (16, 1320711), (21, 1006256), (24, 880474), (28, 754692), (42, 503128), (48, 440237), (56, 377346), (61, 346416), (84, 251564), (112, 188673), (122, 173208), (168, 125782), (183, 115472), (244, 86604), (336, 62891), (366, 57736), (427, 49488), (488, 43302), (732, 28868), (854, 24744), (976, 21651), (1031, 20496), (1281, 16496), (1464, 14434), (1708, 12372), (2062, 10248), (2562, 8248), (2928, 7217), (3093, 6832), (3416, 6186), (4124, 5124)]