18931780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{4663}}^1$

素因数の和:4708

約数の個数: 48

約数和(自身を含む): 47013120

約数和(自身を除く): 28081340

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 29, 35, 58, 70, 116, 140, 145, 203, 290, 406, 580, 812, 1015, 2030, 4060, 4663, 9326, 18652, 23315, 32641, 46630, 65282, 93260, 130564, 135227, 163205, 270454, 326410, 540908, 652820, 676135, 946589, 1352270, 1893178, 2704540, 3786356, 4732945, 9465890, 18931780]

約数ペア:

[(1, 18931780), (2, 9465890), (4, 4732945), (5, 3786356), (7, 2704540), (10, 1893178), (14, 1352270), (20, 946589), (28, 676135), (29, 652820), (35, 540908), (58, 326410), (70, 270454), (116, 163205), (140, 135227), (145, 130564), (203, 93260), (290, 65282), (406, 46630), (580, 32641), (812, 23315), (1015, 18652), (2030, 9326), (4060, 4663)]