81787455

素因数分解:

$3^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{19543}}^1$

素因数の和:19588

約数の個数: 32

約数和(自身を含む): 150097920

約数和(自身を除く): 68310465

約数列:

[1, 3, 5, 9, 15, 27, 31, 45, 93, 135, 155, 279, 465, 837, 1395, 4185, 19543, 58629, 97715, 175887, 293145, 527661, 605833, 879435, 1817499, 2638305, 3029165, 5452497, 9087495, 16357491, 27262485, 81787455]

約数ペア:

[(1, 81787455), (3, 27262485), (5, 16357491), (9, 9087495), (15, 5452497), (27, 3029165), (31, 2638305), (45, 1817499), (93, 879435), (135, 605833), (155, 527661), (279, 293145), (465, 175887), (837, 97715), (1395, 58629), (4185, 19543)]