21591376

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{101}}^1\times {\mathrm{431}}^1$

素因数の和:571

約数の個数: 40

約数和(自身を含む): 43711488

約数和(自身を除く): 22120112

約数列:

[1, 2, 4, 8, 16, 31, 62, 101, 124, 202, 248, 404, 431, 496, 808, 862, 1616, 1724, 3131, 3448, 6262, 6896, 12524, 13361, 25048, 26722, 43531, 50096, 53444, 87062, 106888, 174124, 213776, 348248, 696496, 1349461, 2698922, 5397844, 10795688, 21591376]

約数ペア:

[(1, 21591376), (2, 10795688), (4, 5397844), (8, 2698922), (16, 1349461), (31, 696496), (62, 348248), (101, 213776), (124, 174124), (202, 106888), (248, 87062), (404, 53444), (431, 50096), (496, 43531), (808, 26722), (862, 25048), (1616, 13361), (1724, 12524), (3131, 6896), (3448, 6262)]