20151120

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{449}}^1$

素因数の和:493

約数の個数: 160

約数和(自身を含む): 72316800

約数和(自身を除く): 52165680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 11, 12, 15, 16, 17, 20, 22, 24, 30, 33, 34, 40, 44, 48, 51, 55, 60, 66, 68, 80, 85, 88, 102, 110, 120, 132, 136, 165, 170, 176, 187, 204, 220, 240, 255, 264, 272, 330, 340, 374, 408, 440, 449, 510, 528, 561, 660, 680, 748, 816, 880, 898, 935, 1020, 1122, 1320, 1347, 1360, 1496, 1796, 1870, 2040, 2244, 2245, 2640, 2694, 2805, 2992, 3592, 3740, 4080, 4488, 4490, 4939, 5388, 5610, 6735, 7184, 7480, 7633, 8976, 8980, 9878, 10776, 11220, 13470, 14817, 14960, 15266, 17960, 19756, 21552, 22440, 22899, 24695, 26940, 29634, 30532, 35920, 38165, 39512, 44880, 45798, 49390, 53880, 59268, 61064, 74085, 76330, 79024, 83963, 91596, 98780, 107760, 114495, 118536, 122128, 148170, 152660, 167926, 183192, 197560, 228990, 237072, 251889, 296340, 305320, 335852, 366384, 395120, 419815, 457980, 503778, 592680, 610640, 671704, 839630, 915960, 1007556, 1185360, 1259445, 1343408, 1679260, 1831920, 2015112, 2518890, 3358520, 4030224, 5037780, 6717040, 10075560, 20151120]

約数ペア:

[(1, 20151120), (2, 10075560), (3, 6717040), (4, 5037780), (5, 4030224), (6, 3358520), (8, 2518890), (10, 2015112), (11, 1831920), (12, 1679260), (15, 1343408), (16, 1259445), (17, 1185360), (20, 1007556), (22, 915960), (24, 839630), (30, 671704), (33, 610640), (34, 592680), (40, 503778), (44, 457980), (48, 419815), (51, 395120), (55, 366384), (60, 335852), (66, 305320), (68, 296340), (80, 251889), (85, 237072), (88, 228990), (102, 197560), (110, 183192), (120, 167926), (132, 152660), (136, 148170), (165, 122128), (170, 118536), (176, 114495), (187, 107760), (204, 98780), (220, 91596), (240, 83963), (255, 79024), (264, 76330), (272, 74085), (330, 61064), (340, 59268), (374, 53880), (408, 49390), (440, 45798), (449, 44880), (510, 39512), (528, 38165), (561, 35920), (660, 30532), (680, 29634), (748, 26940), (816, 24695), (880, 22899), (898, 22440), (935, 21552), (1020, 19756), (1122, 17960), (1320, 15266), (1347, 14960), (1360, 14817), (1496, 13470), (1796, 11220), (1870, 10776), (2040, 9878), (2244, 8980), (2245, 8976), (2640, 7633), (2694, 7480), (2805, 7184), (2992, 6735), (3592, 5610), (3740, 5388), (4080, 4939), (4488, 4490)]