18221385

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{1907}}^1$

素因数の和:1942

約数の個数: 48

約数和(自身を含む): 36542016

約数和(自身を除く): 18320631

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 49, 65, 91, 105, 147, 195, 245, 273, 455, 637, 735, 1365, 1907, 1911, 3185, 5721, 9535, 9555, 13349, 24791, 28605, 40047, 66745, 74373, 93443, 123955, 173537, 200235, 280329, 371865, 467215, 520611, 867685, 1214759, 1401645, 2603055, 3644277, 6073795, 18221385]

約数ペア:

[(1, 18221385), (3, 6073795), (5, 3644277), (7, 2603055), (13, 1401645), (15, 1214759), (21, 867685), (35, 520611), (39, 467215), (49, 371865), (65, 280329), (91, 200235), (105, 173537), (147, 123955), (195, 93443), (245, 74373), (273, 66745), (455, 40047), (637, 28605), (735, 24791), (1365, 13349), (1907, 9555), (1911, 9535), (3185, 5721)]