201223420

素因数分解:

$2^2\times 5^1\times {\mathrm{397}}^1\times {\mathrm{25343}}^1$

素因数の和:25749

約数の個数: 24

約数和(自身を含む): 423650304

約数和(自身を除く): 222426884

約数列:

[1, 2, 4, 5, 10, 20, 397, 794, 1588, 1985, 3970, 7940, 25343, 50686, 101372, 126715, 253430, 506860, 10061171, 20122342, 40244684, 50305855, 100611710, 201223420]

約数ペア:

[(1, 201223420), (2, 100611710), (4, 50305855), (5, 40244684), (10, 20122342), (20, 10061171), (397, 506860), (794, 253430), (1588, 126715), (1985, 101372), (3970, 50686), (7940, 25343)]