21400960

素因数分解:

$2^7\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{281}}^1$

素因数の和:324

約数の個数: 128

約数和(自身を含む): 62130240

約数和(自身を除く): 40729280

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 32, 34, 35, 40, 56, 64, 68, 70, 80, 85, 112, 119, 128, 136, 140, 160, 170, 224, 238, 272, 280, 281, 320, 340, 448, 476, 544, 560, 562, 595, 640, 680, 896, 952, 1088, 1120, 1124, 1190, 1360, 1405, 1904, 1967, 2176, 2240, 2248, 2380, 2720, 2810, 3808, 3934, 4480, 4496, 4760, 4777, 5440, 5620, 7616, 7868, 8992, 9520, 9554, 9835, 10880, 11240, 15232, 15736, 17984, 19040, 19108, 19670, 22480, 23885, 31472, 33439, 35968, 38080, 38216, 39340, 44960, 47770, 62944, 66878, 76160, 76432, 78680, 89920, 95540, 125888, 133756, 152864, 157360, 167195, 179840, 191080, 251776, 267512, 305728, 314720, 334390, 382160, 535024, 611456, 629440, 668780, 764320, 1070048, 1258880, 1337560, 1528640, 2140096, 2675120, 3057280, 4280192, 5350240, 10700480, 21400960]

約数ペア:

[(1, 21400960), (2, 10700480), (4, 5350240), (5, 4280192), (7, 3057280), (8, 2675120), (10, 2140096), (14, 1528640), (16, 1337560), (17, 1258880), (20, 1070048), (28, 764320), (32, 668780), (34, 629440), (35, 611456), (40, 535024), (56, 382160), (64, 334390), (68, 314720), (70, 305728), (80, 267512), (85, 251776), (112, 191080), (119, 179840), (128, 167195), (136, 157360), (140, 152864), (160, 133756), (170, 125888), (224, 95540), (238, 89920), (272, 78680), (280, 76432), (281, 76160), (320, 66878), (340, 62944), (448, 47770), (476, 44960), (544, 39340), (560, 38216), (562, 38080), (595, 35968), (640, 33439), (680, 31472), (896, 23885), (952, 22480), (1088, 19670), (1120, 19108), (1124, 19040), (1190, 17984), (1360, 15736), (1405, 15232), (1904, 11240), (1967, 10880), (2176, 9835), (2240, 9554), (2248, 9520), (2380, 8992), (2720, 7868), (2810, 7616), (3808, 5620), (3934, 5440), (4480, 4777), (4496, 4760)]