20123909900

素因数分解:

$2^2\times 5^2\times {\mathrm{20921}}^1\times {\mathrm{9619}}^1$

素因数の和:30554

約数の個数: 36

約数和(自身を含む): 43675511880

約数和(自身を除く): 23551601980

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 9619, 19238, 20921, 38476, 41842, 48095, 83684, 96190, 104605, 192380, 209210, 240475, 418420, 480950, 523025, 961900, 1046050, 2092100, 201239099, 402478198, 804956396, 1006195495, 2012390990, 4024781980, 5030977475, 10061954950, 20123909900]

約数ペア:

[(1, 20123909900), (2, 10061954950), (4, 5030977475), (5, 4024781980), (10, 2012390990), (20, 1006195495), (25, 804956396), (50, 402478198), (100, 201239099), (9619, 2092100), (19238, 1046050), (20921, 961900), (38476, 523025), (41842, 480950), (48095, 418420), (83684, 240475), (96190, 209210), (104605, 192380)]