20825920

素因数分解:

$2^6\times 5^1\times {\mathrm{151}}^1\times {\mathrm{431}}^1$

素因数の和:599

約数の個数: 56

約数和(自身を含む): 50035968

約数和(自身を除く): 29210048

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 151, 160, 302, 320, 431, 604, 755, 862, 1208, 1510, 1724, 2155, 2416, 3020, 3448, 4310, 4832, 6040, 6896, 8620, 9664, 12080, 13792, 17240, 24160, 27584, 34480, 48320, 65081, 68960, 130162, 137920, 260324, 325405, 520648, 650810, 1041296, 1301620, 2082592, 2603240, 4165184, 5206480, 10412960, 20825920]

約数ペア:

[(1, 20825920), (2, 10412960), (4, 5206480), (5, 4165184), (8, 2603240), (10, 2082592), (16, 1301620), (20, 1041296), (32, 650810), (40, 520648), (64, 325405), (80, 260324), (151, 137920), (160, 130162), (302, 68960), (320, 65081), (431, 48320), (604, 34480), (755, 27584), (862, 24160), (1208, 17240), (1510, 13792), (1724, 12080), (2155, 9664), (2416, 8620), (3020, 6896), (3448, 6040), (4310, 4832)]