21796880

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{38923}}^1$

素因数の和:38943

約数の個数: 40

約数和(自身を含む): 57918912

約数和(自身を除く): 36122032

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 38923, 77846, 155692, 194615, 272461, 311384, 389230, 544922, 622768, 778460, 1089844, 1362305, 1556920, 2179688, 2724610, 3113840, 4359376, 5449220, 10898440, 21796880]

約数ペア:

[(1, 21796880), (2, 10898440), (4, 5449220), (5, 4359376), (7, 3113840), (8, 2724610), (10, 2179688), (14, 1556920), (16, 1362305), (20, 1089844), (28, 778460), (35, 622768), (40, 544922), (56, 389230), (70, 311384), (80, 272461), (112, 194615), (140, 155692), (280, 77846), (560, 38923)]