8991125

素因数分解:

$5^3\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{503}}^1$

素因数の和:542

約数の個数: 32

約数和(自身を含む): 13208832

約数和(自身を除く): 4217707

約数列:

[1, 5, 11, 13, 25, 55, 65, 125, 143, 275, 325, 503, 715, 1375, 1625, 2515, 3575, 5533, 6539, 12575, 17875, 27665, 32695, 62875, 71929, 138325, 163475, 359645, 691625, 817375, 1798225, 8991125]

約数ペア:

[(1, 8991125), (5, 1798225), (11, 817375), (13, 691625), (25, 359645), (55, 163475), (65, 138325), (125, 71929), (143, 62875), (275, 32695), (325, 27665), (503, 17875), (715, 12575), (1375, 6539), (1625, 5533), (2515, 3575)]