199904420

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{191}}^1\times {\mathrm{1217}}^1$

素因数の和:1460

約数の個数: 48

約数和(自身を含む): 432165888

約数和(自身を除く): 232261468

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 191, 215, 382, 430, 764, 860, 955, 1217, 1910, 2434, 3820, 4868, 6085, 8213, 12170, 16426, 24340, 32852, 41065, 52331, 82130, 104662, 164260, 209324, 232447, 261655, 464894, 523310, 929788, 1046620, 1162235, 2324470, 4648940, 9995221, 19990442, 39980884, 49976105, 99952210, 199904420]

約数ペア:

[(1, 199904420), (2, 99952210), (4, 49976105), (5, 39980884), (10, 19990442), (20, 9995221), (43, 4648940), (86, 2324470), (172, 1162235), (191, 1046620), (215, 929788), (382, 523310), (430, 464894), (764, 261655), (860, 232447), (955, 209324), (1217, 164260), (1910, 104662), (2434, 82130), (3820, 52331), (4868, 41065), (6085, 32852), (8213, 24340), (12170, 16426)]