1621878400

素因数分解:

$2^7\times 5^2\times {\mathrm{506837}}^1$

素因数の和:506861

約数の個数: 48

約数和(自身を含む): 4006554390

約数和(自身を除く): 2384675990

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 320, 400, 640, 800, 1600, 3200, 506837, 1013674, 2027348, 2534185, 4054696, 5068370, 8109392, 10136740, 12670925, 16218784, 20273480, 25341850, 32437568, 40546960, 50683700, 64875136, 81093920, 101367400, 162187840, 202734800, 324375680, 405469600, 810939200, 1621878400]

約数ペア:

[(1, 1621878400), (2, 810939200), (4, 405469600), (5, 324375680), (8, 202734800), (10, 162187840), (16, 101367400), (20, 81093920), (25, 64875136), (32, 50683700), (40, 40546960), (50, 32437568), (64, 25341850), (80, 20273480), (100, 16218784), (128, 12670925), (160, 10136740), (200, 8109392), (320, 5068370), (400, 4054696), (640, 2534185), (800, 2027348), (1600, 1013674), (3200, 506837)]