19900500

素因数分解:

$2^2\times 3^1\times 5^3\times {\mathrm{13267}}^1$

素因数の和:13289

約数の個数: 48

約数和(自身を含む): 57954624

約数和(自身を除く): 38054124

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 125, 150, 250, 300, 375, 500, 750, 1500, 13267, 26534, 39801, 53068, 66335, 79602, 132670, 159204, 199005, 265340, 331675, 398010, 663350, 796020, 995025, 1326700, 1658375, 1990050, 3316750, 3980100, 4975125, 6633500, 9950250, 19900500]

約数ペア:

[(1, 19900500), (2, 9950250), (3, 6633500), (4, 4975125), (5, 3980100), (6, 3316750), (10, 1990050), (12, 1658375), (15, 1326700), (20, 995025), (25, 796020), (30, 663350), (50, 398010), (60, 331675), (75, 265340), (100, 199005), (125, 159204), (150, 132670), (250, 79602), (300, 66335), (375, 53068), (500, 39801), (750, 26534), (1500, 13267)]