18725840

素因数分解:

$2^4\times 5^1\times 7^2\times {\mathrm{17}}^1\times {\mathrm{281}}^1$

素因数の和:325

約数の個数: 120

約数和(自身を含む): 53815752

約数和(自身を除く): 35089912

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 49, 56, 68, 70, 80, 85, 98, 112, 119, 136, 140, 170, 196, 238, 245, 272, 280, 281, 340, 392, 476, 490, 560, 562, 595, 680, 784, 833, 952, 980, 1124, 1190, 1360, 1405, 1666, 1904, 1960, 1967, 2248, 2380, 2810, 3332, 3920, 3934, 4165, 4496, 4760, 4777, 5620, 6664, 7868, 8330, 9520, 9554, 9835, 11240, 13328, 13769, 15736, 16660, 19108, 19670, 22480, 23885, 27538, 31472, 33320, 33439, 38216, 39340, 47770, 55076, 66640, 66878, 68845, 76432, 78680, 95540, 110152, 133756, 137690, 157360, 167195, 191080, 220304, 234073, 267512, 275380, 334390, 382160, 468146, 535024, 550760, 668780, 936292, 1101520, 1170365, 1337560, 1872584, 2340730, 2675120, 3745168, 4681460, 9362920, 18725840]

約数ペア:

[(1, 18725840), (2, 9362920), (4, 4681460), (5, 3745168), (7, 2675120), (8, 2340730), (10, 1872584), (14, 1337560), (16, 1170365), (17, 1101520), (20, 936292), (28, 668780), (34, 550760), (35, 535024), (40, 468146), (49, 382160), (56, 334390), (68, 275380), (70, 267512), (80, 234073), (85, 220304), (98, 191080), (112, 167195), (119, 157360), (136, 137690), (140, 133756), (170, 110152), (196, 95540), (238, 78680), (245, 76432), (272, 68845), (280, 66878), (281, 66640), (340, 55076), (392, 47770), (476, 39340), (490, 38216), (560, 33439), (562, 33320), (595, 31472), (680, 27538), (784, 23885), (833, 22480), (952, 19670), (980, 19108), (1124, 16660), (1190, 15736), (1360, 13769), (1405, 13328), (1666, 11240), (1904, 9835), (1960, 9554), (1967, 9520), (2248, 8330), (2380, 7868), (2810, 6664), (3332, 5620), (3920, 4777), (3934, 4760), (4165, 4496)]