21278302071

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{103}}^1\times {\mathrm{170873}}^1$

素因数の和:171023

約数の個数: 32

約数和(自身を含む): 31845445632

約数和(自身を除く): 10567143561

約数列:

[1, 3, 13, 31, 39, 93, 103, 309, 403, 1209, 1339, 3193, 4017, 9579, 41509, 124527, 170873, 512619, 2221349, 5297063, 6664047, 15891189, 17599919, 52799757, 68861819, 206585457, 228798947, 545597489, 686396841, 1636792467, 7092767357, 21278302071]

約数ペア:

[(1, 21278302071), (3, 7092767357), (13, 1636792467), (31, 686396841), (39, 545597489), (93, 228798947), (103, 206585457), (309, 68861819), (403, 52799757), (1209, 17599919), (1339, 15891189), (3193, 6664047), (4017, 5297063), (9579, 2221349), (41509, 512619), (124527, 170873)]