21285992

素因数分解:

$2^3\times 7^2\times {\mathrm{13}}^1\times {\mathrm{4177}}^1$

素因数の和:4210

約数の個数: 48

約数和(自身を含む): 50010660

約数和(自身を除く): 28724668

約数列:

[1, 2, 4, 7, 8, 13, 14, 26, 28, 49, 52, 56, 91, 98, 104, 182, 196, 364, 392, 637, 728, 1274, 2548, 4177, 5096, 8354, 16708, 29239, 33416, 54301, 58478, 108602, 116956, 204673, 217204, 233912, 380107, 409346, 434408, 760214, 818692, 1520428, 1637384, 2660749, 3040856, 5321498, 10642996, 21285992]

約数ペア:

[(1, 21285992), (2, 10642996), (4, 5321498), (7, 3040856), (8, 2660749), (13, 1637384), (14, 1520428), (26, 818692), (28, 760214), (49, 434408), (52, 409346), (56, 380107), (91, 233912), (98, 217204), (104, 204673), (182, 116956), (196, 108602), (364, 58478), (392, 54301), (637, 33416), (728, 29239), (1274, 16708), (2548, 8354), (4177, 5096)]