20701000

素因数分解:

$2^3\times 5^3\times {\mathrm{127}}^1\times {\mathrm{163}}^1$

素因数の和:311

約数の個数: 64

約数和(自身を含む): 49121280

約数和(自身を除く): 28420280

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 125, 127, 163, 200, 250, 254, 326, 500, 508, 635, 652, 815, 1000, 1016, 1270, 1304, 1630, 2540, 3175, 3260, 4075, 5080, 6350, 6520, 8150, 12700, 15875, 16300, 20375, 20701, 25400, 31750, 32600, 40750, 41402, 63500, 81500, 82804, 103505, 127000, 163000, 165608, 207010, 414020, 517525, 828040, 1035050, 2070100, 2587625, 4140200, 5175250, 10350500, 20701000]

約数ペア:

[(1, 20701000), (2, 10350500), (4, 5175250), (5, 4140200), (8, 2587625), (10, 2070100), (20, 1035050), (25, 828040), (40, 517525), (50, 414020), (100, 207010), (125, 165608), (127, 163000), (163, 127000), (200, 103505), (250, 82804), (254, 81500), (326, 63500), (500, 41402), (508, 40750), (635, 32600), (652, 31750), (815, 25400), (1000, 20701), (1016, 20375), (1270, 16300), (1304, 15875), (1630, 12700), (2540, 8150), (3175, 6520), (3260, 6350), (4075, 5080)]