389094100

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{2207}}^1$

素因数の和:2305

約数の個数: 72

約数和(自身を含む): 885443328

約数和(自身を除く): 496349228

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 43, 50, 82, 86, 100, 164, 172, 205, 215, 410, 430, 820, 860, 1025, 1075, 1763, 2050, 2150, 2207, 3526, 4100, 4300, 4414, 7052, 8815, 8828, 11035, 17630, 22070, 35260, 44075, 44140, 55175, 88150, 90487, 94901, 110350, 176300, 180974, 189802, 220700, 361948, 379604, 452435, 474505, 904870, 949010, 1809740, 1898020, 2262175, 2372525, 3890941, 4524350, 4745050, 7781882, 9048700, 9490100, 15563764, 19454705, 38909410, 77818820, 97273525, 194547050, 389094100]

約数ペア:

[(1, 389094100), (2, 194547050), (4, 97273525), (5, 77818820), (10, 38909410), (20, 19454705), (25, 15563764), (41, 9490100), (43, 9048700), (50, 7781882), (82, 4745050), (86, 4524350), (100, 3890941), (164, 2372525), (172, 2262175), (205, 1898020), (215, 1809740), (410, 949010), (430, 904870), (820, 474505), (860, 452435), (1025, 379604), (1075, 361948), (1763, 220700), (2050, 189802), (2150, 180974), (2207, 176300), (3526, 110350), (4100, 94901), (4300, 90487), (4414, 88150), (7052, 55175), (8815, 44140), (8828, 44075), (11035, 35260), (17630, 22070)]