18974720

素因数分解:

$2^{11}\times 5^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1$

素因数の和:153

約数の個数: 96

約数和(自身を含む): 48648600

約数和(自身を除く): 29673880

約数列:

[1, 2, 4, 5, 8, 10, 16, 17, 20, 32, 34, 40, 64, 68, 80, 85, 109, 128, 136, 160, 170, 218, 256, 272, 320, 340, 436, 512, 544, 545, 640, 680, 872, 1024, 1088, 1090, 1280, 1360, 1744, 1853, 2048, 2176, 2180, 2560, 2720, 3488, 3706, 4352, 4360, 5120, 5440, 6976, 7412, 8704, 8720, 9265, 10240, 10880, 13952, 14824, 17408, 17440, 18530, 21760, 27904, 29648, 34816, 34880, 37060, 43520, 55808, 59296, 69760, 74120, 87040, 111616, 118592, 139520, 148240, 174080, 223232, 237184, 279040, 296480, 474368, 558080, 592960, 948736, 1116160, 1185920, 1897472, 2371840, 3794944, 4743680, 9487360, 18974720]

約数ペア:

[(1, 18974720), (2, 9487360), (4, 4743680), (5, 3794944), (8, 2371840), (10, 1897472), (16, 1185920), (17, 1116160), (20, 948736), (32, 592960), (34, 558080), (40, 474368), (64, 296480), (68, 279040), (80, 237184), (85, 223232), (109, 174080), (128, 148240), (136, 139520), (160, 118592), (170, 111616), (218, 87040), (256, 74120), (272, 69760), (320, 59296), (340, 55808), (436, 43520), (512, 37060), (544, 34880), (545, 34816), (640, 29648), (680, 27904), (872, 21760), (1024, 18530), (1088, 17440), (1090, 17408), (1280, 14824), (1360, 13952), (1744, 10880), (1853, 10240), (2048, 9265), (2176, 8720), (2180, 8704), (2560, 7412), (2720, 6976), (3488, 5440), (3706, 5120), (4352, 4360)]