21912156

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{89}}^1\times {\mathrm{977}}^1$

素因数の和:1083

約数の個数: 72

約数和(自身を含む): 64078560

約数和(自身を除く): 42166404

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 89, 126, 178, 252, 267, 356, 534, 623, 801, 977, 1068, 1246, 1602, 1869, 1954, 2492, 2931, 3204, 3738, 3908, 5607, 5862, 6839, 7476, 8793, 11214, 11724, 13678, 17586, 20517, 22428, 27356, 35172, 41034, 61551, 82068, 86953, 123102, 173906, 246204, 260859, 347812, 521718, 608671, 782577, 1043436, 1217342, 1565154, 1826013, 2434684, 3130308, 3652026, 5478039, 7304052, 10956078, 21912156]

約数ペア:

[(1, 21912156), (2, 10956078), (3, 7304052), (4, 5478039), (6, 3652026), (7, 3130308), (9, 2434684), (12, 1826013), (14, 1565154), (18, 1217342), (21, 1043436), (28, 782577), (36, 608671), (42, 521718), (63, 347812), (84, 260859), (89, 246204), (126, 173906), (178, 123102), (252, 86953), (267, 82068), (356, 61551), (534, 41034), (623, 35172), (801, 27356), (977, 22428), (1068, 20517), (1246, 17586), (1602, 13678), (1869, 11724), (1954, 11214), (2492, 8793), (2931, 7476), (3204, 6839), (3738, 5862), (3908, 5607)]