18875440

素因数分解:

$2^4\times 5^1\times {\mathrm{17}}^1\times {\mathrm{13879}}^1$

素因数の和:13909

約数の個数: 40

約数和(自身を含む): 46470240

約数和(自身を除く): 27594800

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 34, 40, 68, 80, 85, 136, 170, 272, 340, 680, 1360, 13879, 27758, 55516, 69395, 111032, 138790, 222064, 235943, 277580, 471886, 555160, 943772, 1110320, 1179715, 1887544, 2359430, 3775088, 4718860, 9437720, 18875440]

約数ペア:

[(1, 18875440), (2, 9437720), (4, 4718860), (5, 3775088), (8, 2359430), (10, 1887544), (16, 1179715), (17, 1110320), (20, 943772), (34, 555160), (40, 471886), (68, 277580), (80, 235943), (85, 222064), (136, 138790), (170, 111032), (272, 69395), (340, 55516), (680, 27758), (1360, 13879)]