200905420

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1\times {\mathrm{1291}}^1$

素因数の和:1582

約数の個数: 48

約数和(自身を含む): 437584896

約数和(自身を除く): 236679476

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 251, 310, 502, 620, 1004, 1255, 1291, 2510, 2582, 5020, 5164, 6455, 7781, 12910, 15562, 25820, 31124, 38905, 40021, 77810, 80042, 155620, 160084, 200105, 324041, 400210, 648082, 800420, 1296164, 1620205, 3240410, 6480820, 10045271, 20090542, 40181084, 50226355, 100452710, 200905420]

約数ペア:

[(1, 200905420), (2, 100452710), (4, 50226355), (5, 40181084), (10, 20090542), (20, 10045271), (31, 6480820), (62, 3240410), (124, 1620205), (155, 1296164), (251, 800420), (310, 648082), (502, 400210), (620, 324041), (1004, 200105), (1255, 160084), (1291, 155620), (2510, 80042), (2582, 77810), (5020, 40021), (5164, 38905), (6455, 31124), (7781, 25820), (12910, 15562)]