68871420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{71}}^1\times {\mathrm{317}}^1$

素因数の和:420

約数の個数: 144

約数和(自身を含む): 225021888

約数和(自身を除く): 156150468

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 71, 85, 90, 102, 142, 153, 170, 180, 204, 213, 255, 284, 306, 317, 340, 355, 426, 510, 612, 634, 639, 710, 765, 852, 951, 1020, 1065, 1207, 1268, 1278, 1420, 1530, 1585, 1902, 2130, 2414, 2556, 2853, 3060, 3170, 3195, 3621, 3804, 4260, 4755, 4828, 5389, 5706, 6035, 6340, 6390, 7242, 9510, 10778, 10863, 11412, 12070, 12780, 14265, 14484, 16167, 18105, 19020, 21556, 21726, 22507, 24140, 26945, 28530, 32334, 36210, 43452, 45014, 48501, 53890, 54315, 57060, 64668, 67521, 72420, 80835, 90028, 97002, 107780, 108630, 112535, 135042, 161670, 194004, 202563, 217260, 225070, 242505, 270084, 323340, 337605, 382619, 405126, 450140, 485010, 675210, 765238, 810252, 970020, 1012815, 1147857, 1350420, 1530476, 1913095, 2025630, 2295714, 3443571, 3826190, 4051260, 4591428, 5739285, 6887142, 7652380, 11478570, 13774284, 17217855, 22957140, 34435710, 68871420]

約数ペア:

[(1, 68871420), (2, 34435710), (3, 22957140), (4, 17217855), (5, 13774284), (6, 11478570), (9, 7652380), (10, 6887142), (12, 5739285), (15, 4591428), (17, 4051260), (18, 3826190), (20, 3443571), (30, 2295714), (34, 2025630), (36, 1913095), (45, 1530476), (51, 1350420), (60, 1147857), (68, 1012815), (71, 970020), (85, 810252), (90, 765238), (102, 675210), (142, 485010), (153, 450140), (170, 405126), (180, 382619), (204, 337605), (213, 323340), (255, 270084), (284, 242505), (306, 225070), (317, 217260), (340, 202563), (355, 194004), (426, 161670), (510, 135042), (612, 112535), (634, 108630), (639, 107780), (710, 97002), (765, 90028), (852, 80835), (951, 72420), (1020, 67521), (1065, 64668), (1207, 57060), (1268, 54315), (1278, 53890), (1420, 48501), (1530, 45014), (1585, 43452), (1902, 36210), (2130, 32334), (2414, 28530), (2556, 26945), (2853, 24140), (3060, 22507), (3170, 21726), (3195, 21556), (3621, 19020), (3804, 18105), (4260, 16167), (4755, 14484), (4828, 14265), (5389, 12780), (5706, 12070), (6035, 11412), (6340, 10863), (6390, 10778), (7242, 9510)]