2881640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{1181}}^1$

素因数の和:1253

約数の個数: 32

約数和(自身を含む): 6595560

約数和(自身を除く): 3713920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1181, 1220, 2362, 2440, 4724, 5905, 9448, 11810, 23620, 47240, 72041, 144082, 288164, 360205, 576328, 720410, 1440820, 2881640]

約数ペア:

[(1, 2881640), (2, 1440820), (4, 720410), (5, 576328), (8, 360205), (10, 288164), (20, 144082), (40, 72041), (61, 47240), (122, 23620), (244, 11810), (305, 9448), (488, 5905), (610, 4724), (1181, 2440), (1220, 2362)]