28070680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131}}^1\times {\mathrm{487}}^1$

素因数の和:640

約数の個数: 64

約数和(自身を含む): 69569280

約数和(自身を除く): 41498600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 131, 220, 262, 440, 487, 524, 655, 974, 1048, 1310, 1441, 1948, 2435, 2620, 2882, 3896, 4870, 5240, 5357, 5764, 7205, 9740, 10714, 11528, 14410, 19480, 21428, 26785, 28820, 42856, 53570, 57640, 63797, 107140, 127594, 214280, 255188, 318985, 510376, 637970, 701767, 1275940, 1403534, 2551880, 2807068, 3508835, 5614136, 7017670, 14035340, 28070680]

約数ペア:

[(1, 28070680), (2, 14035340), (4, 7017670), (5, 5614136), (8, 3508835), (10, 2807068), (11, 2551880), (20, 1403534), (22, 1275940), (40, 701767), (44, 637970), (55, 510376), (88, 318985), (110, 255188), (131, 214280), (220, 127594), (262, 107140), (440, 63797), (487, 57640), (524, 53570), (655, 42856), (974, 28820), (1048, 26785), (1310, 21428), (1441, 19480), (1948, 14410), (2435, 11528), (2620, 10714), (2882, 9740), (3896, 7205), (4870, 5764), (5240, 5357)]