19955025

素因数分解:

$3^3\times 5^2\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1$

素因数の和:120

約数の個数: 96

約数和(自身を含む): 40711680

約数和(自身を除く): 20756655

約数列:

[1, 3, 5, 9, 15, 17, 25, 27, 37, 45, 47, 51, 75, 85, 111, 135, 141, 153, 185, 225, 235, 255, 333, 423, 425, 459, 555, 629, 675, 705, 765, 799, 925, 999, 1175, 1269, 1275, 1665, 1739, 1887, 2115, 2295, 2397, 2775, 3145, 3525, 3825, 3995, 4995, 5217, 5661, 6345, 7191, 8325, 8695, 9435, 10575, 11475, 11985, 15651, 15725, 16983, 19975, 21573, 24975, 26085, 28305, 29563, 31725, 35955, 43475, 46953, 47175, 59925, 78255, 84915, 88689, 107865, 130425, 141525, 147815, 179775, 234765, 266067, 391275, 424575, 443445, 539325, 739075, 798201, 1173825, 1330335, 2217225, 3991005, 6651675, 19955025]

約数ペア:

[(1, 19955025), (3, 6651675), (5, 3991005), (9, 2217225), (15, 1330335), (17, 1173825), (25, 798201), (27, 739075), (37, 539325), (45, 443445), (47, 424575), (51, 391275), (75, 266067), (85, 234765), (111, 179775), (135, 147815), (141, 141525), (153, 130425), (185, 107865), (225, 88689), (235, 84915), (255, 78255), (333, 59925), (423, 47175), (425, 46953), (459, 43475), (555, 35955), (629, 31725), (675, 29563), (705, 28305), (765, 26085), (799, 24975), (925, 21573), (999, 19975), (1175, 16983), (1269, 15725), (1275, 15651), (1665, 11985), (1739, 11475), (1887, 10575), (2115, 9435), (2295, 8695), (2397, 8325), (2775, 7191), (3145, 6345), (3525, 5661), (3825, 5217), (3995, 4995)]