20695610

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{397}}^1\times {\mathrm{401}}^1$

素因数の和:818

約数の個数: 32

約数和(自身を含む): 40318992

約数和(自身を除く): 19623382

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 397, 401, 794, 802, 1985, 2005, 3970, 4010, 5161, 5213, 10322, 10426, 25805, 26065, 51610, 52130, 159197, 318394, 795985, 1591970, 2069561, 4139122, 10347805, 20695610]

約数ペア:

[(1, 20695610), (2, 10347805), (5, 4139122), (10, 2069561), (13, 1591970), (26, 795985), (65, 318394), (130, 159197), (397, 52130), (401, 51610), (794, 26065), (802, 25805), (1985, 10426), (2005, 10322), (3970, 5213), (4010, 5161)]