18221988

素因数分解:

$2^2\times 3^1\times {\mathrm{19}}^1\times {\mathrm{229}}^1\times {\mathrm{349}}^1$

素因数の和:604

約数の個数: 48

約数和(自身を含む): 45080000

約数和(自身を除く): 26858012

約数列:

[1, 2, 3, 4, 6, 12, 19, 38, 57, 76, 114, 228, 229, 349, 458, 687, 698, 916, 1047, 1374, 1396, 2094, 2748, 4188, 4351, 6631, 8702, 13053, 13262, 17404, 19893, 26106, 26524, 39786, 52212, 79572, 79921, 159842, 239763, 319684, 479526, 959052, 1518499, 3036998, 4555497, 6073996, 9110994, 18221988]

約数ペア:

[(1, 18221988), (2, 9110994), (3, 6073996), (4, 4555497), (6, 3036998), (12, 1518499), (19, 959052), (38, 479526), (57, 319684), (76, 239763), (114, 159842), (228, 79921), (229, 79572), (349, 52212), (458, 39786), (687, 26524), (698, 26106), (916, 19893), (1047, 17404), (1374, 13262), (1396, 13053), (2094, 8702), (2748, 6631), (4188, 4351)]