18886240

素因数分解:

$2^5\times 5^1\times {\mathrm{41}}^1\times {\mathrm{2879}}^1$

素因数の和:2935

約数の個数: 48

約数和(自身を含む): 45722880

約数和(自身を除く): 26836640

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 41, 80, 82, 160, 164, 205, 328, 410, 656, 820, 1312, 1640, 2879, 3280, 5758, 6560, 11516, 14395, 23032, 28790, 46064, 57580, 92128, 115160, 118039, 230320, 236078, 460640, 472156, 590195, 944312, 1180390, 1888624, 2360780, 3777248, 4721560, 9443120, 18886240]

約数ペア:

[(1, 18886240), (2, 9443120), (4, 4721560), (5, 3777248), (8, 2360780), (10, 1888624), (16, 1180390), (20, 944312), (32, 590195), (40, 472156), (41, 460640), (80, 236078), (82, 230320), (160, 118039), (164, 115160), (205, 92128), (328, 57580), (410, 46064), (656, 28790), (820, 23032), (1312, 14395), (1640, 11516), (2879, 6560), (3280, 5758)]