18468940

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4549}}^1$

素因数の和:4594

約数の個数: 48

約数和(自身を含む): 45864000

約数和(自身を除く): 27395060

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4549, 9098, 18196, 22745, 31843, 45490, 63686, 90980, 127372, 131921, 159215, 263842, 318430, 527684, 636860, 659605, 923447, 1319210, 1846894, 2638420, 3693788, 4617235, 9234470, 18468940]

約数ペア:

[(1, 18468940), (2, 9234470), (4, 4617235), (5, 3693788), (7, 2638420), (10, 1846894), (14, 1319210), (20, 923447), (28, 659605), (29, 636860), (35, 527684), (58, 318430), (70, 263842), (116, 159215), (140, 131921), (145, 127372), (203, 90980), (290, 63686), (406, 45490), (580, 31843), (812, 22745), (1015, 18196), (2030, 9098), (4060, 4549)]