19738485

素因数分解:

$3^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{163}}^1$

素因数の和:216

約数の個数: 80

約数和(自身を含む): 40005504

約数和(自身を除く): 20267019

約数列:

[1, 3, 5, 9, 13, 15, 23, 27, 39, 45, 65, 69, 81, 115, 117, 135, 163, 195, 207, 299, 345, 351, 405, 489, 585, 621, 815, 897, 1035, 1053, 1467, 1495, 1755, 1863, 2119, 2445, 2691, 3105, 3749, 4401, 4485, 5265, 6357, 7335, 8073, 9315, 10595, 11247, 13203, 13455, 18745, 19071, 22005, 24219, 31785, 33741, 40365, 48737, 56235, 57213, 66015, 95355, 101223, 121095, 146211, 168705, 171639, 243685, 286065, 303669, 438633, 506115, 731055, 858195, 1315899, 1518345, 2193165, 3947697, 6579495, 19738485]

約数ペア:

[(1, 19738485), (3, 6579495), (5, 3947697), (9, 2193165), (13, 1518345), (15, 1315899), (23, 858195), (27, 731055), (39, 506115), (45, 438633), (65, 303669), (69, 286065), (81, 243685), (115, 171639), (117, 168705), (135, 146211), (163, 121095), (195, 101223), (207, 95355), (299, 66015), (345, 57213), (351, 56235), (405, 48737), (489, 40365), (585, 33741), (621, 31785), (815, 24219), (897, 22005), (1035, 19071), (1053, 18745), (1467, 13455), (1495, 13203), (1755, 11247), (1863, 10595), (2119, 9315), (2445, 8073), (2691, 7335), (3105, 6357), (3749, 5265), (4401, 4485)]