20690460

素因数分解:

$2^2\times 3^2\times 5^1\times 7^1\times {\mathrm{16421}}^1$

素因数の和:16443

約数の個数: 72

約数和(自身を含む): 71731296

約数和(自身を除く): 51040836

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, 16421, 32842, 49263, 65684, 82105, 98526, 114947, 147789, 164210, 197052, 229894, 246315, 295578, 328420, 344841, 459788, 492630, 574735, 591156, 689682, 738945, 985260, 1034523, 1149470, 1379364, 1477890, 1724205, 2069046, 2298940, 2955780, 3448410, 4138092, 5172615, 6896820, 10345230, 20690460]

約数ペア:

[(1, 20690460), (2, 10345230), (3, 6896820), (4, 5172615), (5, 4138092), (6, 3448410), (7, 2955780), (9, 2298940), (10, 2069046), (12, 1724205), (14, 1477890), (15, 1379364), (18, 1149470), (20, 1034523), (21, 985260), (28, 738945), (30, 689682), (35, 591156), (36, 574735), (42, 492630), (45, 459788), (60, 344841), (63, 328420), (70, 295578), (84, 246315), (90, 229894), (105, 197052), (126, 164210), (140, 147789), (180, 114947), (210, 98526), (252, 82105), (315, 65684), (420, 49263), (630, 32842), (1260, 16421)]