201291020

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205399}}^1$

素因数の和:205422

約数の個数: 36

約数和(自身を含む): 491727600

約数和(自身を除く): 290436580

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205399, 410798, 821596, 1026995, 1437793, 2053990, 2875586, 4107980, 5751172, 7188965, 10064551, 14377930, 20129102, 28755860, 40258204, 50322755, 100645510, 201291020]

約数ペア:

[(1, 201291020), (2, 100645510), (4, 50322755), (5, 40258204), (7, 28755860), (10, 20129102), (14, 14377930), (20, 10064551), (28, 7188965), (35, 5751172), (49, 4107980), (70, 2875586), (98, 2053990), (140, 1437793), (196, 1026995), (245, 821596), (490, 410798), (980, 205399)]