19988910

素因数分解:

$2^1\times 3^3\times 5^1\times {\mathrm{101}}^1\times {\mathrm{733}}^1$

素因数の和:850

約数の個数: 64

約数和(自身を含む): 53904960

約数和(自身を除く): 33916050

約数列:

[1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 90, 101, 135, 202, 270, 303, 505, 606, 733, 909, 1010, 1466, 1515, 1818, 2199, 2727, 3030, 3665, 4398, 4545, 5454, 6597, 7330, 9090, 10995, 13194, 13635, 19791, 21990, 27270, 32985, 39582, 65970, 74033, 98955, 148066, 197910, 222099, 370165, 444198, 666297, 740330, 1110495, 1332594, 1998891, 2220990, 3331485, 3997782, 6662970, 9994455, 19988910]

約数ペア:

[(1, 19988910), (2, 9994455), (3, 6662970), (5, 3997782), (6, 3331485), (9, 2220990), (10, 1998891), (15, 1332594), (18, 1110495), (27, 740330), (30, 666297), (45, 444198), (54, 370165), (90, 222099), (101, 197910), (135, 148066), (202, 98955), (270, 74033), (303, 65970), (505, 39582), (606, 32985), (733, 27270), (909, 21990), (1010, 19791), (1466, 13635), (1515, 13194), (1818, 10995), (2199, 9090), (2727, 7330), (3030, 6597), (3665, 5454), (4398, 4545)]