138919900

素因数分解:

$2^2\times 5^2\times 7^2\times {\mathrm{28351}}^1$

素因数の和:28379

約数の個数: 54

約数和(自身を含む): 350685888

約数和(自身を除く): 211765988

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 25, 28, 35, 49, 50, 70, 98, 100, 140, 175, 196, 245, 350, 490, 700, 980, 1225, 2450, 4900, 28351, 56702, 113404, 141755, 198457, 283510, 396914, 567020, 708775, 793828, 992285, 1389199, 1417550, 1984570, 2778398, 2835100, 3969140, 4961425, 5556796, 6945995, 9922850, 13891990, 19845700, 27783980, 34729975, 69459950, 138919900]

約数ペア:

[(1, 138919900), (2, 69459950), (4, 34729975), (5, 27783980), (7, 19845700), (10, 13891990), (14, 9922850), (20, 6945995), (25, 5556796), (28, 4961425), (35, 3969140), (49, 2835100), (50, 2778398), (70, 1984570), (98, 1417550), (100, 1389199), (140, 992285), (175, 793828), (196, 708775), (245, 567020), (350, 396914), (490, 283510), (700, 198457), (980, 141755), (1225, 113404), (2450, 56702), (4900, 28351)]