28920040

素因数分解:

$2^3\times 5^1\times {\mathrm{47}}^1\times {\mathrm{15383}}^1$

素因数の和:15441

約数の個数: 32

約数和(自身を含む): 66458880

約数和(自身を除く): 37538840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 47, 94, 188, 235, 376, 470, 940, 1880, 15383, 30766, 61532, 76915, 123064, 153830, 307660, 615320, 723001, 1446002, 2892004, 3615005, 5784008, 7230010, 14460020, 28920040]

約数ペア:

[(1, 28920040), (2, 14460020), (4, 7230010), (5, 5784008), (8, 3615005), (10, 2892004), (20, 1446002), (40, 723001), (47, 615320), (94, 307660), (188, 153830), (235, 123064), (376, 76915), (470, 61532), (940, 30766), (1880, 15383)]