19660125

素因数分解:

$3^1\times 5^3\times {\mathrm{103}}^1\times {\mathrm{509}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 33096960

約数和(自身を除く): 13436835

約数列:

[1, 3, 5, 15, 25, 75, 103, 125, 309, 375, 509, 515, 1527, 1545, 2545, 2575, 7635, 7725, 12725, 12875, 38175, 38625, 52427, 63625, 157281, 190875, 262135, 786405, 1310675, 3932025, 6553375, 19660125]

約数ペア:

[(1, 19660125), (3, 6553375), (5, 3932025), (15, 1310675), (25, 786405), (75, 262135), (103, 190875), (125, 157281), (309, 63625), (375, 52427), (509, 38625), (515, 38175), (1527, 12875), (1545, 12725), (2545, 7725), (2575, 7635)]