19529500

素因数分解:

$2^2\times 5^3\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:439

約数の個数: 48

約数和(自身を含む): 43112160

約数和(自身を除く): 23582660

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 125, 139, 250, 278, 281, 500, 556, 562, 695, 1124, 1390, 1405, 2780, 2810, 3475, 5620, 6950, 7025, 13900, 14050, 17375, 28100, 34750, 35125, 39059, 69500, 70250, 78118, 140500, 156236, 195295, 390590, 781180, 976475, 1952950, 3905900, 4882375, 9764750, 19529500]

約数ペア:

[(1, 19529500), (2, 9764750), (4, 4882375), (5, 3905900), (10, 1952950), (20, 976475), (25, 781180), (50, 390590), (100, 195295), (125, 156236), (139, 140500), (250, 78118), (278, 70250), (281, 69500), (500, 39059), (556, 35125), (562, 34750), (695, 28100), (1124, 17375), (1390, 14050), (1405, 13900), (2780, 7025), (2810, 6950), (3475, 5620)]