201621375

素因数分解:

$3^2\times 5^3\times {\mathrm{277}}^1\times {\mathrm{647}}^1$

素因数の和:945

約数の個数: 48

約数和(自身を含む): 365332032

約数和(自身を除く): 163710657

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 125, 225, 277, 375, 647, 831, 1125, 1385, 1941, 2493, 3235, 4155, 5823, 6925, 9705, 12465, 16175, 20775, 29115, 34625, 48525, 62325, 80875, 103875, 145575, 179219, 242625, 311625, 537657, 727875, 896095, 1612971, 2688285, 4480475, 8064855, 13441425, 22402375, 40324275, 67207125, 201621375]

約数ペア:

[(1, 201621375), (3, 67207125), (5, 40324275), (9, 22402375), (15, 13441425), (25, 8064855), (45, 4480475), (75, 2688285), (125, 1612971), (225, 896095), (277, 727875), (375, 537657), (647, 311625), (831, 242625), (1125, 179219), (1385, 145575), (1941, 103875), (2493, 80875), (3235, 62325), (4155, 48525), (5823, 34625), (6925, 29115), (9705, 20775), (12465, 16175)]