21195360

素因数分解:

$2^5\times 3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{359}}^1$

素因数の和:421

約数の個数: 144

約数和(自身を含む): 74299680

約数和(自身を除く): 53104320

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 41, 45, 48, 60, 72, 80, 82, 90, 96, 120, 123, 144, 160, 164, 180, 205, 240, 246, 288, 328, 359, 360, 369, 410, 480, 492, 615, 656, 718, 720, 738, 820, 984, 1077, 1230, 1312, 1436, 1440, 1476, 1640, 1795, 1845, 1968, 2154, 2460, 2872, 2952, 3231, 3280, 3590, 3690, 3936, 4308, 4920, 5385, 5744, 5904, 6462, 6560, 7180, 7380, 8616, 9840, 10770, 11488, 11808, 12924, 14360, 14719, 14760, 16155, 17232, 19680, 21540, 25848, 28720, 29438, 29520, 32310, 34464, 43080, 44157, 51696, 57440, 58876, 59040, 64620, 73595, 86160, 88314, 103392, 117752, 129240, 132471, 147190, 172320, 176628, 220785, 235504, 258480, 264942, 294380, 353256, 441570, 471008, 516960, 529884, 588760, 662355, 706512, 883140, 1059768, 1177520, 1324710, 1413024, 1766280, 2119536, 2355040, 2649420, 3532560, 4239072, 5298840, 7065120, 10597680, 21195360]

約数ペア:

[(1, 21195360), (2, 10597680), (3, 7065120), (4, 5298840), (5, 4239072), (6, 3532560), (8, 2649420), (9, 2355040), (10, 2119536), (12, 1766280), (15, 1413024), (16, 1324710), (18, 1177520), (20, 1059768), (24, 883140), (30, 706512), (32, 662355), (36, 588760), (40, 529884), (41, 516960), (45, 471008), (48, 441570), (60, 353256), (72, 294380), (80, 264942), (82, 258480), (90, 235504), (96, 220785), (120, 176628), (123, 172320), (144, 147190), (160, 132471), (164, 129240), (180, 117752), (205, 103392), (240, 88314), (246, 86160), (288, 73595), (328, 64620), (359, 59040), (360, 58876), (369, 57440), (410, 51696), (480, 44157), (492, 43080), (615, 34464), (656, 32310), (718, 29520), (720, 29438), (738, 28720), (820, 25848), (984, 21540), (1077, 19680), (1230, 17232), (1312, 16155), (1436, 14760), (1440, 14719), (1476, 14360), (1640, 12924), (1795, 11808), (1845, 11488), (1968, 10770), (2154, 9840), (2460, 8616), (2872, 7380), (2952, 7180), (3231, 6560), (3280, 6462), (3590, 5904), (3690, 5744), (3936, 5385), (4308, 4920)]