21228495

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^2\times {\mathrm{59}}^1\times {\mathrm{83}}^1$

素因数の和:184

約数の個数: 48

約数和(自身を含む): 37134720

約数和(自身を除く): 15906225

約数列:

[1, 3, 5, 15, 17, 51, 59, 83, 85, 177, 249, 255, 289, 295, 415, 867, 885, 1003, 1245, 1411, 1445, 3009, 4233, 4335, 4897, 5015, 7055, 14691, 15045, 17051, 21165, 23987, 24485, 51153, 71961, 73455, 83249, 85255, 119935, 249747, 255765, 359805, 416245, 1248735, 1415233, 4245699, 7076165, 21228495]

約数ペア:

[(1, 21228495), (3, 7076165), (5, 4245699), (15, 1415233), (17, 1248735), (51, 416245), (59, 359805), (83, 255765), (85, 249747), (177, 119935), (249, 85255), (255, 83249), (289, 73455), (295, 71961), (415, 51153), (867, 24485), (885, 23987), (1003, 21165), (1245, 17051), (1411, 15045), (1445, 14691), (3009, 7055), (4233, 5015), (4335, 4897)]