638910

素因数分解:

$2^1\times 3^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{229}}^1$

素因数の和:273

約数の個数: 48

約数和(自身を含む): 1722240

約数和(自身を除く): 1083330

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 31, 45, 62, 90, 93, 155, 186, 229, 279, 310, 458, 465, 558, 687, 930, 1145, 1374, 1395, 2061, 2290, 2790, 3435, 4122, 6870, 7099, 10305, 14198, 20610, 21297, 35495, 42594, 63891, 70990, 106485, 127782, 212970, 319455, 638910]

約数ペア:

[(1, 638910), (2, 319455), (3, 212970), (5, 127782), (6, 106485), (9, 70990), (10, 63891), (15, 42594), (18, 35495), (30, 21297), (31, 20610), (45, 14198), (62, 10305), (90, 7099), (93, 6870), (155, 4122), (186, 3435), (229, 2790), (279, 2290), (310, 2061), (458, 1395), (465, 1374), (558, 1145), (687, 930)]