21013829120

素因数分解:

$2^9\times 5^1\times {\mathrm{463}}^1\times {\mathrm{17729}}^1$

素因数の和:18215

約数の個数: 80

約数和(自身を含む): 50495607360

約数和(自身を除く): 29481778240

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 463, 512, 640, 926, 1280, 1852, 2315, 2560, 3704, 4630, 7408, 9260, 14816, 17729, 18520, 29632, 35458, 37040, 59264, 70916, 74080, 88645, 118528, 141832, 148160, 177290, 237056, 283664, 296320, 354580, 567328, 592640, 709160, 1134656, 1185280, 1418320, 2269312, 2836640, 4538624, 5673280, 8208527, 9077248, 11346560, 16417054, 22693120, 32834108, 41042635, 45386240, 65668216, 82085270, 131336432, 164170540, 262672864, 328341080, 525345728, 656682160, 1050691456, 1313364320, 2101382912, 2626728640, 4202765824, 5253457280, 10506914560, 21013829120]

約数ペア:

[(1, 21013829120), (2, 10506914560), (4, 5253457280), (5, 4202765824), (8, 2626728640), (10, 2101382912), (16, 1313364320), (20, 1050691456), (32, 656682160), (40, 525345728), (64, 328341080), (80, 262672864), (128, 164170540), (160, 131336432), (256, 82085270), (320, 65668216), (463, 45386240), (512, 41042635), (640, 32834108), (926, 22693120), (1280, 16417054), (1852, 11346560), (2315, 9077248), (2560, 8208527), (3704, 5673280), (4630, 4538624), (7408, 2836640), (9260, 2269312), (14816, 1418320), (17729, 1185280), (18520, 1134656), (29632, 709160), (35458, 592640), (37040, 567328), (59264, 354580), (70916, 296320), (74080, 283664), (88645, 237056), (118528, 177290), (141832, 148160)]