201220460

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{205327}}^1$

素因数の和:205350

約数の個数: 36

約数和(自身を含む): 491555232

約数和(自身を除く): 290334772

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 205327, 410654, 821308, 1026635, 1437289, 2053270, 2874578, 4106540, 5749156, 7186445, 10061023, 14372890, 20122046, 28745780, 40244092, 50305115, 100610230, 201220460]

約数ペア:

[(1, 201220460), (2, 100610230), (4, 50305115), (5, 40244092), (7, 28745780), (10, 20122046), (14, 14372890), (20, 10061023), (28, 7186445), (35, 5749156), (49, 4106540), (70, 2874578), (98, 2053270), (140, 1437289), (196, 1026635), (245, 821308), (490, 410654), (980, 205327)]