12991000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1181}}^1$

素因数の和:1213

約数の個数: 64

約数和(自身を含む): 33190560

約数和(自身を除く): 20199560

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1181, 1375, 2200, 2362, 2750, 4724, 5500, 5905, 9448, 11000, 11810, 12991, 23620, 25982, 29525, 47240, 51964, 59050, 64955, 103928, 118100, 129910, 147625, 236200, 259820, 295250, 324775, 519640, 590500, 649550, 1181000, 1299100, 1623875, 2598200, 3247750, 6495500, 12991000]

約数ペア:

[(1, 12991000), (2, 6495500), (4, 3247750), (5, 2598200), (8, 1623875), (10, 1299100), (11, 1181000), (20, 649550), (22, 590500), (25, 519640), (40, 324775), (44, 295250), (50, 259820), (55, 236200), (88, 147625), (100, 129910), (110, 118100), (125, 103928), (200, 64955), (220, 59050), (250, 51964), (275, 47240), (440, 29525), (500, 25982), (550, 23620), (1000, 12991), (1100, 11810), (1181, 11000), (1375, 9448), (2200, 5905), (2362, 5500), (2750, 4724)]