21982520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{78509}}^1$

素因数の和:78527

約数の個数: 32

約数和(自身を含む): 56527200

約数和(自身を除く): 34544680

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 78509, 157018, 314036, 392545, 549563, 628072, 785090, 1099126, 1570180, 2198252, 2747815, 3140360, 4396504, 5495630, 10991260, 21982520]

約数ペア:

[(1, 21982520), (2, 10991260), (4, 5495630), (5, 4396504), (7, 3140360), (8, 2747815), (10, 2198252), (14, 1570180), (20, 1099126), (28, 785090), (35, 628072), (40, 549563), (56, 392545), (70, 314036), (140, 157018), (280, 78509)]