21415380

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{50989}}^1$

素因数の和:51008

約数の個数: 48

約数和(自身を含む): 68530560

約数和(自身を除く): 47115180

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 50989, 101978, 152967, 203956, 254945, 305934, 356923, 509890, 611868, 713846, 764835, 1019780, 1070769, 1427692, 1529670, 1784615, 2141538, 3059340, 3569230, 4283076, 5353845, 7138460, 10707690, 21415380]

約数ペア:

[(1, 21415380), (2, 10707690), (3, 7138460), (4, 5353845), (5, 4283076), (6, 3569230), (7, 3059340), (10, 2141538), (12, 1784615), (14, 1529670), (15, 1427692), (20, 1070769), (21, 1019780), (28, 764835), (30, 713846), (35, 611868), (42, 509890), (60, 356923), (70, 305934), (84, 254945), (105, 203956), (140, 152967), (210, 101978), (420, 50989)]