2778349725

素因数分解:

$3^2\times 5^2\times {\mathrm{137}}^1\times {\mathrm{173}}^1\times {\mathrm{521}}^1$

素因数の和:847

約数の個数: 72

約数和(自身を含む): 5051308392

約数和(自身を除く): 2272958667

約数列:

[1, 3, 5, 9, 15, 25, 45, 75, 137, 173, 225, 411, 519, 521, 685, 865, 1233, 1557, 1563, 2055, 2595, 2605, 3425, 4325, 4689, 6165, 7785, 7815, 10275, 12975, 13025, 23445, 23701, 30825, 38925, 39075, 71103, 71377, 90133, 117225, 118505, 213309, 214131, 270399, 355515, 356885, 450665, 592525, 642393, 811197, 1066545, 1070655, 1351995, 1777575, 1784425, 2253325, 3211965, 4055985, 5332725, 5353275, 6759975, 12348221, 16059825, 20279925, 37044663, 61741105, 111133989, 185223315, 308705525, 555669945, 926116575, 2778349725]

約数ペア:

[(1, 2778349725), (3, 926116575), (5, 555669945), (9, 308705525), (15, 185223315), (25, 111133989), (45, 61741105), (75, 37044663), (137, 20279925), (173, 16059825), (225, 12348221), (411, 6759975), (519, 5353275), (521, 5332725), (685, 4055985), (865, 3211965), (1233, 2253325), (1557, 1784425), (1563, 1777575), (2055, 1351995), (2595, 1070655), (2605, 1066545), (3425, 811197), (4325, 642393), (4689, 592525), (6165, 450665), (7785, 356885), (7815, 355515), (10275, 270399), (12975, 214131), (13025, 213309), (23445, 118505), (23701, 117225), (30825, 90133), (38925, 71377), (39075, 71103)]