18207540

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{251}}^1$

素因数の和:310

約数の個数: 144

約数和(自身を含む): 61641216

約数和(自身を除く): 43433676

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 251, 260, 279, 310, 372, 390, 403, 465, 468, 502, 558, 585, 620, 753, 780, 806, 930, 1004, 1116, 1170, 1209, 1255, 1395, 1506, 1612, 1860, 2015, 2259, 2340, 2418, 2510, 2790, 3012, 3263, 3627, 3765, 4030, 4518, 4836, 5020, 5580, 6045, 6526, 7254, 7530, 7781, 8060, 9036, 9789, 11295, 12090, 13052, 14508, 15060, 15562, 16315, 18135, 19578, 22590, 23343, 24180, 29367, 31124, 32630, 36270, 38905, 39156, 45180, 46686, 48945, 58734, 65260, 70029, 72540, 77810, 93372, 97890, 101153, 116715, 117468, 140058, 146835, 155620, 195780, 202306, 233430, 280116, 293670, 303459, 350145, 404612, 466860, 505765, 587340, 606918, 700290, 910377, 1011530, 1213836, 1400580, 1517295, 1820754, 2023060, 3034590, 3641508, 4551885, 6069180, 9103770, 18207540]

約数ペア:

[(1, 18207540), (2, 9103770), (3, 6069180), (4, 4551885), (5, 3641508), (6, 3034590), (9, 2023060), (10, 1820754), (12, 1517295), (13, 1400580), (15, 1213836), (18, 1011530), (20, 910377), (26, 700290), (30, 606918), (31, 587340), (36, 505765), (39, 466860), (45, 404612), (52, 350145), (60, 303459), (62, 293670), (65, 280116), (78, 233430), (90, 202306), (93, 195780), (117, 155620), (124, 146835), (130, 140058), (155, 117468), (156, 116715), (180, 101153), (186, 97890), (195, 93372), (234, 77810), (251, 72540), (260, 70029), (279, 65260), (310, 58734), (372, 48945), (390, 46686), (403, 45180), (465, 39156), (468, 38905), (502, 36270), (558, 32630), (585, 31124), (620, 29367), (753, 24180), (780, 23343), (806, 22590), (930, 19578), (1004, 18135), (1116, 16315), (1170, 15562), (1209, 15060), (1255, 14508), (1395, 13052), (1506, 12090), (1612, 11295), (1860, 9789), (2015, 9036), (2259, 8060), (2340, 7781), (2418, 7530), (2510, 7254), (2790, 6526), (3012, 6045), (3263, 5580), (3627, 5020), (3765, 4836), (4030, 4518)]