20642625

素因数分解:

$3^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{311}}^1$

素因数の和:391

約数の個数: 48

約数和(自身を含む): 37964160

約数和(自身を除く): 17321535

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 125, 177, 225, 295, 311, 375, 531, 885, 933, 1125, 1475, 1555, 2655, 2799, 4425, 4665, 7375, 7775, 13275, 13995, 18349, 22125, 23325, 38875, 55047, 66375, 69975, 91745, 116625, 165141, 275235, 349875, 458725, 825705, 1376175, 2293625, 4128525, 6880875, 20642625]

約数ペア:

[(1, 20642625), (3, 6880875), (5, 4128525), (9, 2293625), (15, 1376175), (25, 825705), (45, 458725), (59, 349875), (75, 275235), (125, 165141), (177, 116625), (225, 91745), (295, 69975), (311, 66375), (375, 55047), (531, 38875), (885, 23325), (933, 22125), (1125, 18349), (1475, 13995), (1555, 13275), (2655, 7775), (2799, 7375), (4425, 4665)]