20634345

素因数分解:

$3^8\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1$

素因数の和:83

約数の個数: 72

約数和(自身を含む): 40387464

約数和(自身を除く): 19753119

約数列:

[1, 3, 5, 9, 15, 17, 27, 37, 45, 51, 81, 85, 111, 135, 153, 185, 243, 255, 333, 405, 459, 555, 629, 729, 765, 999, 1215, 1377, 1665, 1887, 2187, 2295, 2997, 3145, 3645, 4131, 4995, 5661, 6561, 6885, 8991, 9435, 10935, 12393, 14985, 16983, 20655, 26973, 28305, 32805, 37179, 44955, 50949, 61965, 80919, 84915, 111537, 134865, 152847, 185895, 242757, 254745, 404595, 458541, 557685, 764235, 1213785, 1375623, 2292705, 4126869, 6878115, 20634345]

約数ペア:

[(1, 20634345), (3, 6878115), (5, 4126869), (9, 2292705), (15, 1375623), (17, 1213785), (27, 764235), (37, 557685), (45, 458541), (51, 404595), (81, 254745), (85, 242757), (111, 185895), (135, 152847), (153, 134865), (185, 111537), (243, 84915), (255, 80919), (333, 61965), (405, 50949), (459, 44955), (555, 37179), (629, 32805), (729, 28305), (765, 26973), (999, 20655), (1215, 16983), (1377, 14985), (1665, 12393), (1887, 10935), (2187, 9435), (2295, 8991), (2997, 6885), (3145, 6561), (3645, 5661), (4131, 4995)]