21956520

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{47}}^1\times {\mathrm{229}}^1$

素因数の和:307

約数の個数: 128

約数和(自身を含む): 71539200

約数和(自身を除く): 49582680

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 17, 20, 24, 30, 34, 40, 47, 51, 60, 68, 85, 94, 102, 120, 136, 141, 170, 188, 204, 229, 235, 255, 282, 340, 376, 408, 458, 470, 510, 564, 680, 687, 705, 799, 916, 940, 1020, 1128, 1145, 1374, 1410, 1598, 1832, 1880, 2040, 2290, 2397, 2748, 2820, 3196, 3435, 3893, 3995, 4580, 4794, 5496, 5640, 6392, 6870, 7786, 7990, 9160, 9588, 10763, 11679, 11985, 13740, 15572, 15980, 19176, 19465, 21526, 23358, 23970, 27480, 31144, 31960, 32289, 38930, 43052, 46716, 47940, 53815, 58395, 64578, 77860, 86104, 93432, 95880, 107630, 116790, 129156, 155720, 161445, 182971, 215260, 233580, 258312, 322890, 365942, 430520, 467160, 548913, 645780, 731884, 914855, 1097826, 1291560, 1463768, 1829710, 2195652, 2744565, 3659420, 4391304, 5489130, 7318840, 10978260, 21956520]

約数ペア:

[(1, 21956520), (2, 10978260), (3, 7318840), (4, 5489130), (5, 4391304), (6, 3659420), (8, 2744565), (10, 2195652), (12, 1829710), (15, 1463768), (17, 1291560), (20, 1097826), (24, 914855), (30, 731884), (34, 645780), (40, 548913), (47, 467160), (51, 430520), (60, 365942), (68, 322890), (85, 258312), (94, 233580), (102, 215260), (120, 182971), (136, 161445), (141, 155720), (170, 129156), (188, 116790), (204, 107630), (229, 95880), (235, 93432), (255, 86104), (282, 77860), (340, 64578), (376, 58395), (408, 53815), (458, 47940), (470, 46716), (510, 43052), (564, 38930), (680, 32289), (687, 31960), (705, 31144), (799, 27480), (916, 23970), (940, 23358), (1020, 21526), (1128, 19465), (1145, 19176), (1374, 15980), (1410, 15572), (1598, 13740), (1832, 11985), (1880, 11679), (2040, 10763), (2290, 9588), (2397, 9160), (2748, 7990), (2820, 7786), (3196, 6870), (3435, 6392), (3893, 5640), (3995, 5496), (4580, 4794)]