18428085

素因数分解:

$3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{109}}^1$

素因数の和:167

約数の個数: 72

約数和(自身を含む): 36876840

約数和(自身を除く): 18448755

約数列:

[1, 3, 5, 9, 13, 15, 17, 39, 45, 51, 65, 85, 109, 117, 153, 195, 221, 255, 289, 327, 545, 585, 663, 765, 867, 981, 1105, 1417, 1445, 1635, 1853, 1989, 2601, 3315, 3757, 4251, 4335, 4905, 5559, 7085, 9265, 9945, 11271, 12753, 13005, 16677, 18785, 21255, 24089, 27795, 31501, 33813, 56355, 63765, 72267, 83385, 94503, 120445, 157505, 169065, 216801, 283509, 361335, 409513, 472515, 1084005, 1228539, 1417545, 2047565, 3685617, 6142695, 18428085]

約数ペア:

[(1, 18428085), (3, 6142695), (5, 3685617), (9, 2047565), (13, 1417545), (15, 1228539), (17, 1084005), (39, 472515), (45, 409513), (51, 361335), (65, 283509), (85, 216801), (109, 169065), (117, 157505), (153, 120445), (195, 94503), (221, 83385), (255, 72267), (289, 63765), (327, 56355), (545, 33813), (585, 31501), (663, 27795), (765, 24089), (867, 21255), (981, 18785), (1105, 16677), (1417, 13005), (1445, 12753), (1635, 11271), (1853, 9945), (1989, 9265), (2601, 7085), (3315, 5559), (3757, 4905), (4251, 4335)]