21127370

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{179}}^1$

素因数の和:263

約数の個数: 64

約数和(自身を含む): 44323200

約数和(自身を除く): 23195830

約数列:

[1, 2, 5, 10, 11, 22, 29, 37, 55, 58, 74, 110, 145, 179, 185, 290, 319, 358, 370, 407, 638, 814, 895, 1073, 1595, 1790, 1969, 2035, 2146, 3190, 3938, 4070, 5191, 5365, 6623, 9845, 10382, 10730, 11803, 13246, 19690, 23606, 25955, 33115, 51910, 57101, 59015, 66230, 72853, 114202, 118030, 145706, 192067, 285505, 364265, 384134, 571010, 728530, 960335, 1920670, 2112737, 4225474, 10563685, 21127370]

約数ペア:

[(1, 21127370), (2, 10563685), (5, 4225474), (10, 2112737), (11, 1920670), (22, 960335), (29, 728530), (37, 571010), (55, 384134), (58, 364265), (74, 285505), (110, 192067), (145, 145706), (179, 118030), (185, 114202), (290, 72853), (319, 66230), (358, 59015), (370, 57101), (407, 51910), (638, 33115), (814, 25955), (895, 23606), (1073, 19690), (1595, 13246), (1790, 11803), (1969, 10730), (2035, 10382), (2146, 9845), (3190, 6623), (3938, 5365), (4070, 5191)]