21509208

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{42677}}^1$

素因数の和:42696

約数の個数: 48

約数和(自身を含む): 66577680

約数和(自身を除く): 45068472

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 28, 36, 42, 56, 63, 72, 84, 126, 168, 252, 504, 42677, 85354, 128031, 170708, 256062, 298739, 341416, 384093, 512124, 597478, 768186, 896217, 1024248, 1194956, 1536372, 1792434, 2389912, 2688651, 3072744, 3584868, 5377302, 7169736, 10754604, 21509208]

約数ペア:

[(1, 21509208), (2, 10754604), (3, 7169736), (4, 5377302), (6, 3584868), (7, 3072744), (8, 2688651), (9, 2389912), (12, 1792434), (14, 1536372), (18, 1194956), (21, 1024248), (24, 896217), (28, 768186), (36, 597478), (42, 512124), (56, 384093), (63, 341416), (72, 298739), (84, 256062), (126, 170708), (168, 128031), (252, 85354), (504, 42677)]