161061875

素因数分解:

$5^4\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{461}}^1$

素因数の和:537

約数の個数: 40

約数和(自身を含む): 222266352

約数和(自身を除く): 61204477

約数列:

[1, 5, 13, 25, 43, 65, 125, 215, 325, 461, 559, 625, 1075, 1625, 2305, 2795, 5375, 5993, 8125, 11525, 13975, 19823, 26875, 29965, 57625, 69875, 99115, 149825, 257699, 288125, 349375, 495575, 749125, 1288495, 2477875, 3745625, 6442475, 12389375, 32212375, 161061875]

約数ペア:

[(1, 161061875), (5, 32212375), (13, 12389375), (25, 6442475), (43, 3745625), (65, 2477875), (125, 1288495), (215, 749125), (325, 495575), (461, 349375), (559, 288125), (625, 257699), (1075, 149825), (1625, 99115), (2305, 69875), (2795, 57625), (5375, 29965), (5993, 26875), (8125, 19823), (11525, 13975)]