18728415

素因数分解:

$3^4\times 5^1\times {\mathrm{131}}^1\times {\mathrm{353}}^1$

素因数の和:501

約数の個数: 40

約数和(自身を含む): 33924528

約数和(自身を除く): 15196113

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 131, 135, 353, 393, 405, 655, 1059, 1179, 1765, 1965, 3177, 3537, 5295, 5895, 9531, 10611, 15885, 17685, 28593, 46243, 47655, 53055, 138729, 142965, 231215, 416187, 693645, 1248561, 2080935, 3745683, 6242805, 18728415]

約数ペア:

[(1, 18728415), (3, 6242805), (5, 3745683), (9, 2080935), (15, 1248561), (27, 693645), (45, 416187), (81, 231215), (131, 142965), (135, 138729), (353, 53055), (393, 47655), (405, 46243), (655, 28593), (1059, 17685), (1179, 15885), (1765, 10611), (1965, 9531), (3177, 5895), (3537, 5295)]