28907240

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8707}}^1$

素因数の和:8801

約数の個数: 32

約数和(自身を含む): 65832480

約数和(自身を除く): 36925240

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 8707, 17414, 34828, 43535, 69656, 87070, 174140, 348280, 722681, 1445362, 2890724, 3613405, 5781448, 7226810, 14453620, 28907240]

約数ペア:

[(1, 28907240), (2, 14453620), (4, 7226810), (5, 5781448), (8, 3613405), (10, 2890724), (20, 1445362), (40, 722681), (83, 348280), (166, 174140), (332, 87070), (415, 69656), (664, 43535), (830, 34828), (1660, 17414), (3320, 8707)]