170221720

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{69763}}^1$

素因数の和:69835

約数の個数: 32

約数和(自身を含む): 389283120

約数和(自身を除く): 219061400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 69763, 139526, 279052, 348815, 558104, 697630, 1395260, 2790520, 4255543, 8511086, 17022172, 21277715, 34044344, 42555430, 85110860, 170221720]

約数ペア:

[(1, 170221720), (2, 85110860), (4, 42555430), (5, 34044344), (8, 21277715), (10, 17022172), (20, 8511086), (40, 4255543), (61, 2790520), (122, 1395260), (244, 697630), (305, 558104), (488, 348815), (610, 279052), (1220, 139526), (2440, 69763)]