80289880

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{251}}^1\times {\mathrm{727}}^1$

素因数の和:1000

約数の個数: 64

約数和(自身を含む): 198132480

約数和(自身を除く): 117842600

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 251, 440, 502, 727, 1004, 1255, 1454, 2008, 2510, 2761, 2908, 3635, 5020, 5522, 5816, 7270, 7997, 10040, 11044, 13805, 14540, 15994, 22088, 27610, 29080, 31988, 39985, 55220, 63976, 79970, 110440, 159940, 182477, 319880, 364954, 729908, 912385, 1459816, 1824770, 2007247, 3649540, 4014494, 7299080, 8028988, 10036235, 16057976, 20072470, 40144940, 80289880]

約数ペア:

[(1, 80289880), (2, 40144940), (4, 20072470), (5, 16057976), (8, 10036235), (10, 8028988), (11, 7299080), (20, 4014494), (22, 3649540), (40, 2007247), (44, 1824770), (55, 1459816), (88, 912385), (110, 729908), (220, 364954), (251, 319880), (440, 182477), (502, 159940), (727, 110440), (1004, 79970), (1255, 63976), (1454, 55220), (2008, 39985), (2510, 31988), (2761, 29080), (2908, 27610), (3635, 22088), (5020, 15994), (5522, 14540), (5816, 13805), (7270, 11044), (7997, 10040)]