81172105

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{947}}^1$

素因数の和:1069

約数の個数: 32

約数和(自身を含む): 116490240

約数和(自身を除く): 35318135

約数列:

[1, 5, 7, 31, 35, 79, 155, 217, 395, 553, 947, 1085, 2449, 2765, 4735, 6629, 12245, 17143, 29357, 33145, 74813, 85715, 146785, 205499, 374065, 523691, 1027495, 2319203, 2618455, 11596015, 16234421, 81172105]

約数ペア:

[(1, 81172105), (5, 16234421), (7, 11596015), (31, 2618455), (35, 2319203), (79, 1027495), (155, 523691), (217, 374065), (395, 205499), (553, 146785), (947, 85715), (1085, 74813), (2449, 33145), (2765, 29357), (4735, 17143), (6629, 12245)]