18800860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{433}}^1$

素因数の和:622

約数の個数: 48

約数和(自身を含む): 42872256

約数和(自身を除く): 24071396

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 167, 260, 334, 433, 668, 835, 866, 1670, 1732, 2165, 2171, 3340, 4330, 4342, 5629, 8660, 8684, 10855, 11258, 21710, 22516, 28145, 43420, 56290, 72311, 112580, 144622, 289244, 361555, 723110, 940043, 1446220, 1880086, 3760172, 4700215, 9400430, 18800860]

約数ペア:

[(1, 18800860), (2, 9400430), (4, 4700215), (5, 3760172), (10, 1880086), (13, 1446220), (20, 940043), (26, 723110), (52, 361555), (65, 289244), (130, 144622), (167, 112580), (260, 72311), (334, 56290), (433, 43420), (668, 28145), (835, 22516), (866, 21710), (1670, 11258), (1732, 10855), (2165, 8684), (2171, 8660), (3340, 5629), (4330, 4342)]