20509310

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{223}}^1\times {\mathrm{541}}^1$

素因数の和:788

約数の個数: 32

約数和(自身を含む): 39336192

約数和(自身を除く): 18826882

約数列:

[1, 2, 5, 10, 17, 34, 85, 170, 223, 446, 541, 1082, 1115, 2230, 2705, 3791, 5410, 7582, 9197, 18394, 18955, 37910, 45985, 91970, 120643, 241286, 603215, 1206430, 2050931, 4101862, 10254655, 20509310]

約数ペア:

[(1, 20509310), (2, 10254655), (5, 4101862), (10, 2050931), (17, 1206430), (34, 603215), (85, 241286), (170, 120643), (223, 91970), (446, 45985), (541, 37910), (1082, 18955), (1115, 18394), (2230, 9197), (2705, 7582), (3791, 5410)]