678743955

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1933}}^1$

素因数の和:1987

約数の個数: 72

約数和(自身を含む): 1296723792

約数和(自身を除く): 617979837

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 289, 405, 459, 765, 867, 1215, 1377, 1445, 1933, 2295, 2601, 4131, 4335, 5799, 6885, 7803, 9665, 13005, 17397, 20655, 23409, 28995, 32861, 39015, 52191, 70227, 86985, 98583, 117045, 156573, 164305, 260955, 295749, 351135, 469719, 492915, 558637, 782865, 887247, 1478745, 1675911, 2348595, 2661741, 2793185, 4436235, 5027733, 7985223, 8379555, 13308705, 15083199, 25138665, 39926115, 45249597, 75415995, 135748791, 226247985, 678743955]

約数ペア:

[(1, 678743955), (3, 226247985), (5, 135748791), (9, 75415995), (15, 45249597), (17, 39926115), (27, 25138665), (45, 15083199), (51, 13308705), (81, 8379555), (85, 7985223), (135, 5027733), (153, 4436235), (243, 2793185), (255, 2661741), (289, 2348595), (405, 1675911), (459, 1478745), (765, 887247), (867, 782865), (1215, 558637), (1377, 492915), (1445, 469719), (1933, 351135), (2295, 295749), (2601, 260955), (4131, 164305), (4335, 156573), (5799, 117045), (6885, 98583), (7803, 86985), (9665, 70227), (13005, 52191), (17397, 39015), (20655, 32861), (23409, 28995)]