20624940

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16369}}^1$

素因数の和:16391

約数の個数: 72

約数和(自身を含む): 71504160

約数和(自身を除く): 50879220

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 60, 63, 70, 84, 90, 105, 126, 140, 180, 210, 252, 315, 420, 630, 1260, 16369, 32738, 49107, 65476, 81845, 98214, 114583, 147321, 163690, 196428, 229166, 245535, 294642, 327380, 343749, 458332, 491070, 572915, 589284, 687498, 736605, 982140, 1031247, 1145830, 1374996, 1473210, 1718745, 2062494, 2291660, 2946420, 3437490, 4124988, 5156235, 6874980, 10312470, 20624940]

約数ペア:

[(1, 20624940), (2, 10312470), (3, 6874980), (4, 5156235), (5, 4124988), (6, 3437490), (7, 2946420), (9, 2291660), (10, 2062494), (12, 1718745), (14, 1473210), (15, 1374996), (18, 1145830), (20, 1031247), (21, 982140), (28, 736605), (30, 687498), (35, 589284), (36, 572915), (42, 491070), (45, 458332), (60, 343749), (63, 327380), (70, 294642), (84, 245535), (90, 229166), (105, 196428), (126, 163690), (140, 147321), (180, 114583), (210, 98214), (252, 81845), (315, 65476), (420, 49107), (630, 32738), (1260, 16369)]