21872500

素因数分解:

$2^2\times 5^4\times {\mathrm{13}}^1\times {\mathrm{673}}^1$

素因数の和:710

約数の個数: 60

約数和(自身を含む): 51586612

約数和(自身を除く): 29714112

約数列:

[1, 2, 4, 5, 10, 13, 20, 25, 26, 50, 52, 65, 100, 125, 130, 250, 260, 325, 500, 625, 650, 673, 1250, 1300, 1346, 1625, 2500, 2692, 3250, 3365, 6500, 6730, 8125, 8749, 13460, 16250, 16825, 17498, 32500, 33650, 34996, 43745, 67300, 84125, 87490, 168250, 174980, 218725, 336500, 420625, 437450, 841250, 874900, 1093625, 1682500, 2187250, 4374500, 5468125, 10936250, 21872500]

約数ペア:

[(1, 21872500), (2, 10936250), (4, 5468125), (5, 4374500), (10, 2187250), (13, 1682500), (20, 1093625), (25, 874900), (26, 841250), (50, 437450), (52, 420625), (65, 336500), (100, 218725), (125, 174980), (130, 168250), (250, 87490), (260, 84125), (325, 67300), (500, 43745), (625, 34996), (650, 33650), (673, 32500), (1250, 17498), (1300, 16825), (1346, 16250), (1625, 13460), (2500, 8749), (2692, 8125), (3250, 6730), (3365, 6500)]