20665996

素因数分解:

$2^2\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{1609}}^1$

素因数の和:1658

約数の個数: 36

約数和(自身を含む): 41248200

約数和(自身を除く): 20582204

約数列:

[1, 2, 4, 13, 19, 26, 38, 52, 76, 169, 247, 338, 494, 676, 988, 1609, 3211, 3218, 6422, 6436, 12844, 20917, 30571, 41834, 61142, 83668, 122284, 271921, 397423, 543842, 794846, 1087684, 1589692, 5166499, 10332998, 20665996]

約数ペア:

[(1, 20665996), (2, 10332998), (4, 5166499), (13, 1589692), (19, 1087684), (26, 794846), (38, 543842), (52, 397423), (76, 271921), (169, 122284), (247, 83668), (338, 61142), (494, 41834), (676, 30571), (988, 20917), (1609, 12844), (3211, 6436), (3218, 6422)]