199728500

素因数分解:

$2^2\times 5^3\times {\mathrm{173}}^1\times {\mathrm{2309}}^1$

素因数の和:2501

約数の個数: 48

約数和(自身を含む): 438918480

約数和(自身を除く): 239189980

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 173, 250, 346, 500, 692, 865, 1730, 2309, 3460, 4325, 4618, 8650, 9236, 11545, 17300, 21625, 23090, 43250, 46180, 57725, 86500, 115450, 230900, 288625, 399457, 577250, 798914, 1154500, 1597828, 1997285, 3994570, 7989140, 9986425, 19972850, 39945700, 49932125, 99864250, 199728500]

約数ペア:

[(1, 199728500), (2, 99864250), (4, 49932125), (5, 39945700), (10, 19972850), (20, 9986425), (25, 7989140), (50, 3994570), (100, 1997285), (125, 1597828), (173, 1154500), (250, 798914), (346, 577250), (500, 399457), (692, 288625), (865, 230900), (1730, 115450), (2309, 86500), (3460, 57725), (4325, 46180), (4618, 43250), (8650, 23090), (9236, 21625), (11545, 17300)]