21253620

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5807}}^1$

素因数の和:5880

約数の個数: 48

約数和(自身を含む): 60496128

約数和(自身を除く): 39242508

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 61, 122, 183, 244, 305, 366, 610, 732, 915, 1220, 1830, 3660, 5807, 11614, 17421, 23228, 29035, 34842, 58070, 69684, 87105, 116140, 174210, 348420, 354227, 708454, 1062681, 1416908, 1771135, 2125362, 3542270, 4250724, 5313405, 7084540, 10626810, 21253620]

約数ペア:

[(1, 21253620), (2, 10626810), (3, 7084540), (4, 5313405), (5, 4250724), (6, 3542270), (10, 2125362), (12, 1771135), (15, 1416908), (20, 1062681), (30, 708454), (60, 354227), (61, 348420), (122, 174210), (183, 116140), (244, 87105), (305, 69684), (366, 58070), (610, 34842), (732, 29035), (915, 23228), (1220, 17421), (1830, 11614), (3660, 5807)]