200021900

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{613}}^1$

素因数の和:891

約数の個数: 72

約数和(自身を含む): 470063664

約数和(自身を除く): 270041764

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 130, 251, 260, 325, 502, 613, 650, 1004, 1226, 1255, 1300, 2452, 2510, 3065, 3263, 5020, 6130, 6275, 6526, 7969, 12260, 12550, 13052, 15325, 15938, 16315, 25100, 30650, 31876, 32630, 39845, 61300, 65260, 79690, 81575, 153863, 159380, 163150, 199225, 307726, 326300, 398450, 615452, 769315, 796900, 1538630, 2000219, 3077260, 3846575, 4000438, 7693150, 8000876, 10001095, 15386300, 20002190, 40004380, 50005475, 100010950, 200021900]

約数ペア:

[(1, 200021900), (2, 100010950), (4, 50005475), (5, 40004380), (10, 20002190), (13, 15386300), (20, 10001095), (25, 8000876), (26, 7693150), (50, 4000438), (52, 3846575), (65, 3077260), (100, 2000219), (130, 1538630), (251, 796900), (260, 769315), (325, 615452), (502, 398450), (613, 326300), (650, 307726), (1004, 199225), (1226, 163150), (1255, 159380), (1300, 153863), (2452, 81575), (2510, 79690), (3065, 65260), (3263, 61300), (5020, 39845), (6130, 32630), (6275, 31876), (6526, 30650), (7969, 25100), (12260, 16315), (12550, 15938), (13052, 15325)]