81492500

素因数分解:

$2^2\times 5^4\times {\mathrm{37}}^1\times {\mathrm{881}}^1$

素因数の和:942

約数の個数: 60

約数和(自身を含む): 183231972

約数和(自身を除く): 101739472

約数列:

[1, 2, 4, 5, 10, 20, 25, 37, 50, 74, 100, 125, 148, 185, 250, 370, 500, 625, 740, 881, 925, 1250, 1762, 1850, 2500, 3524, 3700, 4405, 4625, 8810, 9250, 17620, 18500, 22025, 23125, 32597, 44050, 46250, 65194, 88100, 92500, 110125, 130388, 162985, 220250, 325970, 440500, 550625, 651940, 814925, 1101250, 1629850, 2202500, 3259700, 4074625, 8149250, 16298500, 20373125, 40746250, 81492500]

約数ペア:

[(1, 81492500), (2, 40746250), (4, 20373125), (5, 16298500), (10, 8149250), (20, 4074625), (25, 3259700), (37, 2202500), (50, 1629850), (74, 1101250), (100, 814925), (125, 651940), (148, 550625), (185, 440500), (250, 325970), (370, 220250), (500, 162985), (625, 130388), (740, 110125), (881, 92500), (925, 88100), (1250, 65194), (1762, 46250), (1850, 44050), (2500, 32597), (3524, 23125), (3700, 22025), (4405, 18500), (4625, 17620), (8810, 9250)]