981221560

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{117371}}^1$

素因数の和:117412

約数の個数: 64

約数和(自身を含む): 2535235200

約数和(自身を除く): 1554013640

約数列:

[1, 2, 4, 5, 8, 10, 11, 19, 20, 22, 38, 40, 44, 55, 76, 88, 95, 110, 152, 190, 209, 220, 380, 418, 440, 760, 836, 1045, 1672, 2090, 4180, 8360, 117371, 234742, 469484, 586855, 938968, 1173710, 1291081, 2230049, 2347420, 2582162, 4460098, 4694840, 5164324, 6455405, 8920196, 10328648, 11150245, 12910810, 17840392, 22300490, 24530539, 25821620, 44600980, 49061078, 51643240, 89201960, 98122156, 122652695, 196244312, 245305390, 490610780, 981221560]

約数ペア:

[(1, 981221560), (2, 490610780), (4, 245305390), (5, 196244312), (8, 122652695), (10, 98122156), (11, 89201960), (19, 51643240), (20, 49061078), (22, 44600980), (38, 25821620), (40, 24530539), (44, 22300490), (55, 17840392), (76, 12910810), (88, 11150245), (95, 10328648), (110, 8920196), (152, 6455405), (190, 5164324), (209, 4694840), (220, 4460098), (380, 2582162), (418, 2347420), (440, 2230049), (760, 1291081), (836, 1173710), (1045, 938968), (1672, 586855), (2090, 469484), (4180, 234742), (8360, 117371)]