21296160

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{643}}^1$

素因数の和:687

約数の個数: 144

約数和(自身を含む): 75950784

約数和(自身を除く): 54654624

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 23, 24, 30, 32, 36, 40, 45, 46, 48, 60, 69, 72, 80, 90, 92, 96, 115, 120, 138, 144, 160, 180, 184, 207, 230, 240, 276, 288, 345, 360, 368, 414, 460, 480, 552, 643, 690, 720, 736, 828, 920, 1035, 1104, 1286, 1380, 1440, 1656, 1840, 1929, 2070, 2208, 2572, 2760, 3215, 3312, 3680, 3858, 4140, 5144, 5520, 5787, 6430, 6624, 7716, 8280, 9645, 10288, 11040, 11574, 12860, 14789, 15432, 16560, 19290, 20576, 23148, 25720, 28935, 29578, 30864, 33120, 38580, 44367, 46296, 51440, 57870, 59156, 61728, 73945, 77160, 88734, 92592, 102880, 115740, 118312, 133101, 147890, 154320, 177468, 185184, 221835, 231480, 236624, 266202, 295780, 308640, 354936, 443670, 462960, 473248, 532404, 591560, 665505, 709872, 887340, 925920, 1064808, 1183120, 1331010, 1419744, 1774680, 2129616, 2366240, 2662020, 3549360, 4259232, 5324040, 7098720, 10648080, 21296160]

約数ペア:

[(1, 21296160), (2, 10648080), (3, 7098720), (4, 5324040), (5, 4259232), (6, 3549360), (8, 2662020), (9, 2366240), (10, 2129616), (12, 1774680), (15, 1419744), (16, 1331010), (18, 1183120), (20, 1064808), (23, 925920), (24, 887340), (30, 709872), (32, 665505), (36, 591560), (40, 532404), (45, 473248), (46, 462960), (48, 443670), (60, 354936), (69, 308640), (72, 295780), (80, 266202), (90, 236624), (92, 231480), (96, 221835), (115, 185184), (120, 177468), (138, 154320), (144, 147890), (160, 133101), (180, 118312), (184, 115740), (207, 102880), (230, 92592), (240, 88734), (276, 77160), (288, 73945), (345, 61728), (360, 59156), (368, 57870), (414, 51440), (460, 46296), (480, 44367), (552, 38580), (643, 33120), (690, 30864), (720, 29578), (736, 28935), (828, 25720), (920, 23148), (1035, 20576), (1104, 19290), (1286, 16560), (1380, 15432), (1440, 14789), (1656, 12860), (1840, 11574), (1929, 11040), (2070, 10288), (2208, 9645), (2572, 8280), (2760, 7716), (3215, 6624), (3312, 6430), (3680, 5787), (3858, 5520), (4140, 5144)]