20987115

素因数分解:

$3^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{211}}^1\times {\mathrm{349}}^1$

素因数の和:587

約数の個数: 32

約数和(自身を含む): 35616000

約数和(自身を除く): 14628885

約数列:

[1, 3, 5, 15, 19, 57, 95, 211, 285, 349, 633, 1047, 1055, 1745, 3165, 4009, 5235, 6631, 12027, 19893, 20045, 33155, 60135, 73639, 99465, 220917, 368195, 1104585, 1399141, 4197423, 6995705, 20987115]

約数ペア:

[(1, 20987115), (3, 6995705), (5, 4197423), (15, 1399141), (19, 1104585), (57, 368195), (95, 220917), (211, 99465), (285, 73639), (349, 60135), (633, 33155), (1047, 20045), (1055, 19893), (1745, 12027), (3165, 6631), (4009, 5235)]