420838

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:108

約数の個数: 24

約数和(自身を含む): 727776

約数和(自身を除く): 306938

約数列:

[1, 2, 11, 22, 37, 47, 74, 94, 121, 242, 407, 517, 814, 1034, 1739, 3478, 4477, 5687, 8954, 11374, 19129, 38258, 210419, 420838]

約数ペア:

[(1, 420838), (2, 210419), (11, 38258), (22, 19129), (37, 11374), (47, 8954), (74, 5687), (94, 4477), (121, 3478), (242, 1739), (407, 1034), (517, 814)]