21568316

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{239}}^1\times {\mathrm{293}}^1$

素因数の和:554

約数の個数: 48

約数和(自身を含む): 47416320

約数和(自身を除く): 25848004

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 239, 293, 308, 478, 586, 956, 1172, 1673, 2051, 2629, 3223, 3346, 4102, 5258, 6446, 6692, 8204, 10516, 12892, 18403, 22561, 36806, 45122, 70027, 73612, 90244, 140054, 280108, 490189, 770297, 980378, 1540594, 1960756, 3081188, 5392079, 10784158, 21568316]

約数ペア:

[(1, 21568316), (2, 10784158), (4, 5392079), (7, 3081188), (11, 1960756), (14, 1540594), (22, 980378), (28, 770297), (44, 490189), (77, 280108), (154, 140054), (239, 90244), (293, 73612), (308, 70027), (478, 45122), (586, 36806), (956, 22561), (1172, 18403), (1673, 12892), (2051, 10516), (2629, 8204), (3223, 6692), (3346, 6446), (4102, 5258)]