19811120

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2081}}^1$

素因数の和:2118

約数の個数: 80

約数和(自身を含む): 55764288

約数和(自身を除く): 35953168

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2081, 2380, 4162, 4760, 8324, 9520, 10405, 14567, 16648, 20810, 29134, 33296, 35377, 41620, 58268, 70754, 72835, 83240, 116536, 141508, 145670, 166480, 176885, 233072, 247639, 283016, 291340, 353770, 495278, 566032, 582680, 707540, 990556, 1165360, 1238195, 1415080, 1981112, 2476390, 2830160, 3962224, 4952780, 9905560, 19811120]

約数ペア:

[(1, 19811120), (2, 9905560), (4, 4952780), (5, 3962224), (7, 2830160), (8, 2476390), (10, 1981112), (14, 1415080), (16, 1238195), (17, 1165360), (20, 990556), (28, 707540), (34, 582680), (35, 566032), (40, 495278), (56, 353770), (68, 291340), (70, 283016), (80, 247639), (85, 233072), (112, 176885), (119, 166480), (136, 145670), (140, 141508), (170, 116536), (238, 83240), (272, 72835), (280, 70754), (340, 58268), (476, 41620), (560, 35377), (595, 33296), (680, 29134), (952, 20810), (1190, 16648), (1360, 14567), (1904, 10405), (2081, 9520), (2380, 8324), (4162, 4760)]