128481200

素因数分解:

$2^4\times 5^2\times {\mathrm{321203}}^1$

素因数の和:321221

約数の個数: 30

約数和(自身を含む): 308677044

約数和(自身を除く): 180195844

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 321203, 642406, 1284812, 1606015, 2569624, 3212030, 5139248, 6424060, 8030075, 12848120, 16060150, 25696240, 32120300, 64240600, 128481200]

約数ペア:

[(1, 128481200), (2, 64240600), (4, 32120300), (5, 25696240), (8, 16060150), (10, 12848120), (16, 8030075), (20, 6424060), (25, 5139248), (40, 3212030), (50, 2569624), (80, 1606015), (100, 1284812), (200, 642406), (400, 321203)]