81411850

素因数分解:

$2^1\times 5^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{499}}^1$

素因数の和:775

約数の個数: 48

約数和(自身を含む): 164052000

約数和(自身を除く): 82640150

約数列:

[1, 2, 5, 10, 13, 25, 26, 50, 65, 130, 251, 325, 499, 502, 650, 998, 1255, 2495, 2510, 3263, 4990, 6275, 6487, 6526, 12475, 12550, 12974, 16315, 24950, 32435, 32630, 64870, 81575, 125249, 162175, 163150, 250498, 324350, 626245, 1252490, 1628237, 3131225, 3256474, 6262450, 8141185, 16282370, 40705925, 81411850]

約数ペア:

[(1, 81411850), (2, 40705925), (5, 16282370), (10, 8141185), (13, 6262450), (25, 3256474), (26, 3131225), (50, 1628237), (65, 1252490), (130, 626245), (251, 324350), (325, 250498), (499, 163150), (502, 162175), (650, 125249), (998, 81575), (1255, 64870), (2495, 32630), (2510, 32435), (3263, 24950), (4990, 16315), (6275, 12974), (6487, 12550), (6526, 12475)]