21143920

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{2221}}^1$

素因数の和:2258

約数の個数: 80

約数和(自身を含む): 59514048

約数和(自身を除く): 38370128

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 17, 20, 28, 34, 35, 40, 56, 68, 70, 80, 85, 112, 119, 136, 140, 170, 238, 272, 280, 340, 476, 560, 595, 680, 952, 1190, 1360, 1904, 2221, 2380, 4442, 4760, 8884, 9520, 11105, 15547, 17768, 22210, 31094, 35536, 37757, 44420, 62188, 75514, 77735, 88840, 124376, 151028, 155470, 177680, 188785, 248752, 264299, 302056, 310940, 377570, 528598, 604112, 621880, 755140, 1057196, 1243760, 1321495, 1510280, 2114392, 2642990, 3020560, 4228784, 5285980, 10571960, 21143920]

約数ペア:

[(1, 21143920), (2, 10571960), (4, 5285980), (5, 4228784), (7, 3020560), (8, 2642990), (10, 2114392), (14, 1510280), (16, 1321495), (17, 1243760), (20, 1057196), (28, 755140), (34, 621880), (35, 604112), (40, 528598), (56, 377570), (68, 310940), (70, 302056), (80, 264299), (85, 248752), (112, 188785), (119, 177680), (136, 155470), (140, 151028), (170, 124376), (238, 88840), (272, 77735), (280, 75514), (340, 62188), (476, 44420), (560, 37757), (595, 35536), (680, 31094), (952, 22210), (1190, 17768), (1360, 15547), (1904, 11105), (2221, 9520), (2380, 8884), (4442, 4760)]