21311178

素因数分解:

$2^1\times 3^1\times 7^2\times {\mathrm{173}}^1\times {\mathrm{419}}^1$

素因数の和:611

約数の個数: 48

約数和(自身を含む): 49986720

約数和(自身を除く): 28675542

約数列:

[1, 2, 3, 6, 7, 14, 21, 42, 49, 98, 147, 173, 294, 346, 419, 519, 838, 1038, 1211, 1257, 2422, 2514, 2933, 3633, 5866, 7266, 8477, 8799, 16954, 17598, 20531, 25431, 41062, 50862, 61593, 72487, 123186, 144974, 217461, 434922, 507409, 1014818, 1522227, 3044454, 3551863, 7103726, 10655589, 21311178]

約数ペア:

[(1, 21311178), (2, 10655589), (3, 7103726), (6, 3551863), (7, 3044454), (14, 1522227), (21, 1014818), (42, 507409), (49, 434922), (98, 217461), (147, 144974), (173, 123186), (294, 72487), (346, 61593), (419, 50862), (519, 41062), (838, 25431), (1038, 20531), (1211, 17598), (1257, 16954), (2422, 8799), (2514, 8477), (2933, 7266), (3633, 5866)]