18687368

素因数分解:

$2^3\times 7^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{311}}^1$

素因数の和:390

約数の個数: 64

約数和(自身を含む): 42681600

約数和(自身を除く): 23994232

約数列:

[1, 2, 4, 7, 8, 14, 28, 29, 37, 56, 58, 74, 116, 148, 203, 232, 259, 296, 311, 406, 518, 622, 812, 1036, 1073, 1244, 1624, 2072, 2146, 2177, 2488, 4292, 4354, 7511, 8584, 8708, 9019, 11507, 15022, 17416, 18038, 23014, 30044, 36076, 46028, 60088, 63133, 72152, 80549, 92056, 126266, 161098, 252532, 322196, 333703, 505064, 644392, 667406, 1334812, 2335921, 2669624, 4671842, 9343684, 18687368]

約数ペア:

[(1, 18687368), (2, 9343684), (4, 4671842), (7, 2669624), (8, 2335921), (14, 1334812), (28, 667406), (29, 644392), (37, 505064), (56, 333703), (58, 322196), (74, 252532), (116, 161098), (148, 126266), (203, 92056), (232, 80549), (259, 72152), (296, 63133), (311, 60088), (406, 46028), (518, 36076), (622, 30044), (812, 23014), (1036, 18038), (1073, 17416), (1244, 15022), (1624, 11507), (2072, 9019), (2146, 8708), (2177, 8584), (2488, 7511), (4292, 4354)]