20941000

素因数分解:

$2^3\times 5^3\times {\mathrm{43}}^1\times {\mathrm{487}}^1$

素因数の和:551

約数の個数: 64

約数和(自身を含む): 50244480

約数和(自身を除く): 29303480

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 43, 50, 86, 100, 125, 172, 200, 215, 250, 344, 430, 487, 500, 860, 974, 1000, 1075, 1720, 1948, 2150, 2435, 3896, 4300, 4870, 5375, 8600, 9740, 10750, 12175, 19480, 20941, 21500, 24350, 41882, 43000, 48700, 60875, 83764, 97400, 104705, 121750, 167528, 209410, 243500, 418820, 487000, 523525, 837640, 1047050, 2094100, 2617625, 4188200, 5235250, 10470500, 20941000]

約数ペア:

[(1, 20941000), (2, 10470500), (4, 5235250), (5, 4188200), (8, 2617625), (10, 2094100), (20, 1047050), (25, 837640), (40, 523525), (43, 487000), (50, 418820), (86, 243500), (100, 209410), (125, 167528), (172, 121750), (200, 104705), (215, 97400), (250, 83764), (344, 60875), (430, 48700), (487, 43000), (500, 41882), (860, 24350), (974, 21500), (1000, 20941), (1075, 19480), (1720, 12175), (1948, 10750), (2150, 9740), (2435, 8600), (3896, 5375), (4300, 4870)]