21988400

素因数分解:

$2^4\times 5^2\times 7^1\times {\mathrm{7853}}^1$

素因数の和:7878

約数の個数: 60

約数和(自身を含む): 60381552

約数和(自身を除く): 38393152

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 35, 40, 50, 56, 70, 80, 100, 112, 140, 175, 200, 280, 350, 400, 560, 700, 1400, 2800, 7853, 15706, 31412, 39265, 54971, 62824, 78530, 109942, 125648, 157060, 196325, 219884, 274855, 314120, 392650, 439768, 549710, 628240, 785300, 879536, 1099420, 1374275, 1570600, 2198840, 2748550, 3141200, 4397680, 5497100, 10994200, 21988400]

約数ペア:

[(1, 21988400), (2, 10994200), (4, 5497100), (5, 4397680), (7, 3141200), (8, 2748550), (10, 2198840), (14, 1570600), (16, 1374275), (20, 1099420), (25, 879536), (28, 785300), (35, 628240), (40, 549710), (50, 439768), (56, 392650), (70, 314120), (80, 274855), (100, 219884), (112, 196325), (140, 157060), (175, 125648), (200, 109942), (280, 78530), (350, 62824), (400, 54971), (560, 39265), (700, 31412), (1400, 15706), (2800, 7853)]