21496072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{139}}^1\times {\mathrm{1487}}^1$

素因数の和:1645

約数の個数: 32

約数和(自身を含む): 43747200

約数和(自身を除く): 22251128

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 139, 278, 556, 1112, 1487, 1807, 2974, 3614, 5948, 7228, 11896, 14456, 19331, 38662, 77324, 154648, 206693, 413386, 826772, 1653544, 2687009, 5374018, 10748036, 21496072]

約数ペア:

[(1, 21496072), (2, 10748036), (4, 5374018), (8, 2687009), (13, 1653544), (26, 826772), (52, 413386), (104, 206693), (139, 154648), (278, 77324), (556, 38662), (1112, 19331), (1487, 14456), (1807, 11896), (2974, 7228), (3614, 5948)]