17970820

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{5581}}^1$

素因数の和:5620

約数の個数: 48

約数和(自身を含む): 45013248

約数和(自身を除く): 27042428

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 23, 28, 35, 46, 70, 92, 115, 140, 161, 230, 322, 460, 644, 805, 1610, 3220, 5581, 11162, 22324, 27905, 39067, 55810, 78134, 111620, 128363, 156268, 195335, 256726, 390670, 513452, 641815, 781340, 898541, 1283630, 1797082, 2567260, 3594164, 4492705, 8985410, 17970820]

約数ペア:

[(1, 17970820), (2, 8985410), (4, 4492705), (5, 3594164), (7, 2567260), (10, 1797082), (14, 1283630), (20, 898541), (23, 781340), (28, 641815), (35, 513452), (46, 390670), (70, 256726), (92, 195335), (115, 156268), (140, 128363), (161, 111620), (230, 78134), (322, 55810), (460, 39067), (644, 27905), (805, 22324), (1610, 11162), (3220, 5581)]