138828515

素因数分解:

$5^1\times 7^2\times {\mathrm{149}}^1\times {\mathrm{3803}}^1$

素因数の和:3971

約数の個数: 24

約数和(自身を含む): 195145200

約数和(自身を除く): 56316685

約数列:

[1, 5, 7, 35, 49, 149, 245, 745, 1043, 3803, 5215, 7301, 19015, 26621, 36505, 133105, 186347, 566647, 931735, 2833235, 3966529, 19832645, 27765703, 138828515]

約数ペア:

[(1, 138828515), (5, 27765703), (7, 19832645), (35, 3966529), (49, 2833235), (149, 931735), (245, 566647), (745, 186347), (1043, 133105), (3803, 36505), (5215, 26621), (7301, 19015)]