20668203

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{89}}^1$

素因数の和:209

約数の個数: 40

約数和(自身を含む): 32408640

約数和(自身を除く): 11740437

約数列:

[1, 3, 9, 27, 47, 61, 81, 89, 141, 183, 267, 423, 549, 801, 1269, 1647, 2403, 2867, 3807, 4183, 4941, 5429, 7209, 8601, 12549, 16287, 25803, 37647, 48861, 77409, 112941, 146583, 232227, 255163, 338823, 439749, 765489, 2296467, 6889401, 20668203]

約数ペア:

[(1, 20668203), (3, 6889401), (9, 2296467), (27, 765489), (47, 439749), (61, 338823), (81, 255163), (89, 232227), (141, 146583), (183, 112941), (267, 77409), (423, 48861), (549, 37647), (801, 25803), (1269, 16287), (1647, 12549), (2403, 8601), (2867, 7209), (3807, 5429), (4183, 4941)]