20962275

素因数分解:

$3^1\times 5^2\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 37685088

約数和(自身を除く): 16722813

約数列:

[1, 3, 5, 15, 17, 25, 41, 51, 75, 85, 123, 205, 255, 401, 425, 615, 697, 1025, 1203, 1275, 2005, 2091, 3075, 3485, 6015, 6817, 10025, 10455, 16441, 17425, 20451, 30075, 34085, 49323, 52275, 82205, 102255, 170425, 246615, 279497, 411025, 511275, 838491, 1233075, 1397485, 4192455, 6987425, 20962275]

約数ペア:

[(1, 20962275), (3, 6987425), (5, 4192455), (15, 1397485), (17, 1233075), (25, 838491), (41, 511275), (51, 411025), (75, 279497), (85, 246615), (123, 170425), (205, 102255), (255, 82205), (401, 52275), (425, 49323), (615, 34085), (697, 30075), (1025, 20451), (1203, 17425), (1275, 16441), (2005, 10455), (2091, 10025), (3075, 6817), (3485, 6015)]