18121490

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:171

約数の個数: 64

約数和(自身を含む): 36837504

約数和(自身を除く): 18716014

約数列:

[1, 2, 5, 10, 17, 34, 37, 43, 67, 74, 85, 86, 134, 170, 185, 215, 335, 370, 430, 629, 670, 731, 1139, 1258, 1462, 1591, 2278, 2479, 2881, 3145, 3182, 3655, 4958, 5695, 5762, 6290, 7310, 7955, 11390, 12395, 14405, 15910, 24790, 27047, 28810, 42143, 48977, 54094, 84286, 97954, 106597, 135235, 210715, 213194, 244885, 270470, 421430, 489770, 532985, 1065970, 1812149, 3624298, 9060745, 18121490]

約数ペア:

[(1, 18121490), (2, 9060745), (5, 3624298), (10, 1812149), (17, 1065970), (34, 532985), (37, 489770), (43, 421430), (67, 270470), (74, 244885), (85, 213194), (86, 210715), (134, 135235), (170, 106597), (185, 97954), (215, 84286), (335, 54094), (370, 48977), (430, 42143), (629, 28810), (670, 27047), (731, 24790), (1139, 15910), (1258, 14405), (1462, 12395), (1591, 11390), (2278, 7955), (2479, 7310), (2881, 6290), (3145, 5762), (3182, 5695), (3655, 4958)]