20471300

素因数分解:

$2^2\times 5^2\times {\mathrm{41}}^1\times {\mathrm{4993}}^1$

素因数の和:5048

約数の個数: 36

約数和(自身を含む): 45515316

約数和(自身を除く): 25044016

約数列:

[1, 2, 4, 5, 10, 20, 25, 41, 50, 82, 100, 164, 205, 410, 820, 1025, 2050, 4100, 4993, 9986, 19972, 24965, 49930, 99860, 124825, 204713, 249650, 409426, 499300, 818852, 1023565, 2047130, 4094260, 5117825, 10235650, 20471300]

約数ペア:

[(1, 20471300), (2, 10235650), (4, 5117825), (5, 4094260), (10, 2047130), (20, 1023565), (25, 818852), (41, 499300), (50, 409426), (82, 249650), (100, 204713), (164, 124825), (205, 99860), (410, 49930), (820, 24965), (1025, 19972), (2050, 9986), (4100, 4993)]