18015291

素因数分解:

$3^5\times 7^2\times {\mathrm{17}}^1\times {\mathrm{89}}^1$

素因数の和:135

約数の個数: 72

約数和(自身を含む): 33611760

約数和(自身を除く): 15596469

約数列:

[1, 3, 7, 9, 17, 21, 27, 49, 51, 63, 81, 89, 119, 147, 153, 189, 243, 267, 357, 441, 459, 567, 623, 801, 833, 1071, 1323, 1377, 1513, 1701, 1869, 2403, 2499, 3213, 3969, 4131, 4361, 4539, 5607, 7209, 7497, 9639, 10591, 11907, 13083, 13617, 16821, 21627, 22491, 28917, 31773, 39249, 40851, 50463, 67473, 74137, 95319, 117747, 122553, 151389, 202419, 222411, 285957, 353241, 367659, 667233, 857871, 1059723, 2001699, 2573613, 6005097, 18015291]

約数ペア:

[(1, 18015291), (3, 6005097), (7, 2573613), (9, 2001699), (17, 1059723), (21, 857871), (27, 667233), (49, 367659), (51, 353241), (63, 285957), (81, 222411), (89, 202419), (119, 151389), (147, 122553), (153, 117747), (189, 95319), (243, 74137), (267, 67473), (357, 50463), (441, 40851), (459, 39249), (567, 31773), (623, 28917), (801, 22491), (833, 21627), (1071, 16821), (1323, 13617), (1377, 13083), (1513, 11907), (1701, 10591), (1869, 9639), (2403, 7497), (2499, 7209), (3213, 5607), (3969, 4539), (4131, 4361)]