81625015

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1\times {\mathrm{97}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 104993280

約数和(自身を除く): 23368265

約数列:

[1, 5, 31, 61, 89, 97, 155, 305, 445, 485, 1891, 2759, 3007, 5429, 5917, 8633, 9455, 13795, 15035, 27145, 29585, 43165, 168299, 183427, 267623, 526613, 841495, 917135, 1338115, 2633065, 16325003, 81625015]

約数ペア:

[(1, 81625015), (5, 16325003), (31, 2633065), (61, 1338115), (89, 917135), (97, 841495), (155, 526613), (305, 267623), (445, 183427), (485, 168299), (1891, 43165), (2759, 29585), (3007, 27145), (5429, 15035), (5917, 13795), (8633, 9455)]