19620320

素因数分解:

$2^5\times 5^1\times {\mathrm{149}}^1\times {\mathrm{823}}^1$

素因数の和:987

約数の個数: 48

約数和(自身を含む): 46720800

約数和(自身を除く): 27100480

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 149, 160, 298, 596, 745, 823, 1192, 1490, 1646, 2384, 2980, 3292, 4115, 4768, 5960, 6584, 8230, 11920, 13168, 16460, 23840, 26336, 32920, 65840, 122627, 131680, 245254, 490508, 613135, 981016, 1226270, 1962032, 2452540, 3924064, 4905080, 9810160, 19620320]

約数ペア:

[(1, 19620320), (2, 9810160), (4, 4905080), (5, 3924064), (8, 2452540), (10, 1962032), (16, 1226270), (20, 981016), (32, 613135), (40, 490508), (80, 245254), (149, 131680), (160, 122627), (298, 65840), (596, 32920), (745, 26336), (823, 23840), (1192, 16460), (1490, 13168), (1646, 11920), (2384, 8230), (2980, 6584), (3292, 5960), (4115, 4768)]