21435320

素因数分解:

$2^3\times 5^1\times {\mathrm{53}}^1\times {\mathrm{10111}}^1$

素因数の和:10175

約数の個数: 32

約数和(自身を含む): 49144320

約数和(自身を除く): 27709000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 53, 106, 212, 265, 424, 530, 1060, 2120, 10111, 20222, 40444, 50555, 80888, 101110, 202220, 404440, 535883, 1071766, 2143532, 2679415, 4287064, 5358830, 10717660, 21435320]

約数ペア:

[(1, 21435320), (2, 10717660), (4, 5358830), (5, 4287064), (8, 2679415), (10, 2143532), (20, 1071766), (40, 535883), (53, 404440), (106, 202220), (212, 101110), (265, 80888), (424, 50555), (530, 40444), (1060, 20222), (2120, 10111)]