880840

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^2\times {\mathrm{61}}^1$

素因数の和:110

約数の個数: 48

約数和(自身を含む): 2125980

約数和(自身を除く): 1245140

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 61, 76, 95, 122, 152, 190, 244, 305, 361, 380, 488, 610, 722, 760, 1159, 1220, 1444, 1805, 2318, 2440, 2888, 3610, 4636, 5795, 7220, 9272, 11590, 14440, 22021, 23180, 44042, 46360, 88084, 110105, 176168, 220210, 440420, 880840]

約数ペア:

[(1, 880840), (2, 440420), (4, 220210), (5, 176168), (8, 110105), (10, 88084), (19, 46360), (20, 44042), (38, 23180), (40, 22021), (61, 14440), (76, 11590), (95, 9272), (122, 7220), (152, 5795), (190, 4636), (244, 3610), (305, 2888), (361, 2440), (380, 2318), (488, 1805), (610, 1444), (722, 1220), (760, 1159)]