21727160

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^1\times {\mathrm{127}}^1$

素因数の和:205

約数の個数: 128

約数和(自身を含む): 61931520

約数和(自身を除く): 40204360

約数列:

[1, 2, 4, 5, 7, 8, 10, 13, 14, 20, 26, 28, 35, 40, 47, 52, 56, 65, 70, 91, 94, 104, 127, 130, 140, 182, 188, 235, 254, 260, 280, 329, 364, 376, 455, 470, 508, 520, 611, 635, 658, 728, 889, 910, 940, 1016, 1222, 1270, 1316, 1645, 1651, 1778, 1820, 1880, 2444, 2540, 2632, 3055, 3290, 3302, 3556, 3640, 4277, 4445, 4888, 5080, 5969, 6110, 6580, 6604, 7112, 8255, 8554, 8890, 11557, 11938, 12220, 13160, 13208, 16510, 17108, 17780, 21385, 23114, 23876, 24440, 29845, 33020, 34216, 35560, 41783, 42770, 46228, 47752, 57785, 59690, 66040, 77597, 83566, 85540, 92456, 115570, 119380, 155194, 167132, 171080, 208915, 231140, 238760, 310388, 334264, 387985, 417830, 462280, 543179, 620776, 775970, 835660, 1086358, 1551940, 1671320, 2172716, 2715895, 3103880, 4345432, 5431790, 10863580, 21727160]

約数ペア:

[(1, 21727160), (2, 10863580), (4, 5431790), (5, 4345432), (7, 3103880), (8, 2715895), (10, 2172716), (13, 1671320), (14, 1551940), (20, 1086358), (26, 835660), (28, 775970), (35, 620776), (40, 543179), (47, 462280), (52, 417830), (56, 387985), (65, 334264), (70, 310388), (91, 238760), (94, 231140), (104, 208915), (127, 171080), (130, 167132), (140, 155194), (182, 119380), (188, 115570), (235, 92456), (254, 85540), (260, 83566), (280, 77597), (329, 66040), (364, 59690), (376, 57785), (455, 47752), (470, 46228), (508, 42770), (520, 41783), (611, 35560), (635, 34216), (658, 33020), (728, 29845), (889, 24440), (910, 23876), (940, 23114), (1016, 21385), (1222, 17780), (1270, 17108), (1316, 16510), (1645, 13208), (1651, 13160), (1778, 12220), (1820, 11938), (1880, 11557), (2444, 8890), (2540, 8554), (2632, 8255), (3055, 7112), (3290, 6604), (3302, 6580), (3556, 6110), (3640, 5969), (4277, 5080), (4445, 4888)]