20775375

素因数分解:

$3^2\times 5^3\times {\mathrm{59}}^1\times {\mathrm{313}}^1$

素因数の和:393

約数の個数: 48

約数和(自身を含む): 38207520

約数和(自身を除く): 17432145

約数列:

[1, 3, 5, 9, 15, 25, 45, 59, 75, 125, 177, 225, 295, 313, 375, 531, 885, 939, 1125, 1475, 1565, 2655, 2817, 4425, 4695, 7375, 7825, 13275, 14085, 18467, 22125, 23475, 39125, 55401, 66375, 70425, 92335, 117375, 166203, 277005, 352125, 461675, 831015, 1385025, 2308375, 4155075, 6925125, 20775375]

約数ペア:

[(1, 20775375), (3, 6925125), (5, 4155075), (9, 2308375), (15, 1385025), (25, 831015), (45, 461675), (59, 352125), (75, 277005), (125, 166203), (177, 117375), (225, 92335), (295, 70425), (313, 66375), (375, 55401), (531, 39125), (885, 23475), (939, 22125), (1125, 18467), (1475, 14085), (1565, 13275), (2655, 7825), (2817, 7375), (4425, 4695)]