21036480

素因数分解:

$2^6\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1289}}^1$

素因数の和:1326

約数の個数: 112

約数和(自身を含む): 70774560

約数和(自身を除く): 49738080

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 17, 20, 24, 30, 32, 34, 40, 48, 51, 60, 64, 68, 80, 85, 96, 102, 120, 136, 160, 170, 192, 204, 240, 255, 272, 320, 340, 408, 480, 510, 544, 680, 816, 960, 1020, 1088, 1289, 1360, 1632, 2040, 2578, 2720, 3264, 3867, 4080, 5156, 5440, 6445, 7734, 8160, 10312, 12890, 15468, 16320, 19335, 20624, 21913, 25780, 30936, 38670, 41248, 43826, 51560, 61872, 65739, 77340, 82496, 87652, 103120, 109565, 123744, 131478, 154680, 175304, 206240, 219130, 247488, 262956, 309360, 328695, 350608, 412480, 438260, 525912, 618720, 657390, 701216, 876520, 1051824, 1237440, 1314780, 1402432, 1753040, 2103648, 2629560, 3506080, 4207296, 5259120, 7012160, 10518240, 21036480]

約数ペア:

[(1, 21036480), (2, 10518240), (3, 7012160), (4, 5259120), (5, 4207296), (6, 3506080), (8, 2629560), (10, 2103648), (12, 1753040), (15, 1402432), (16, 1314780), (17, 1237440), (20, 1051824), (24, 876520), (30, 701216), (32, 657390), (34, 618720), (40, 525912), (48, 438260), (51, 412480), (60, 350608), (64, 328695), (68, 309360), (80, 262956), (85, 247488), (96, 219130), (102, 206240), (120, 175304), (136, 154680), (160, 131478), (170, 123744), (192, 109565), (204, 103120), (240, 87652), (255, 82496), (272, 77340), (320, 65739), (340, 61872), (408, 51560), (480, 43826), (510, 41248), (544, 38670), (680, 30936), (816, 25780), (960, 21913), (1020, 20624), (1088, 19335), (1289, 16320), (1360, 15468), (1632, 12890), (2040, 10312), (2578, 8160), (2720, 7734), (3264, 6445), (3867, 5440), (4080, 5156)]