18909220

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{101}}^1$

素因数の和:181

約数の個数: 96

約数和(自身を含む): 46884096

約数和(自身を除く): 27974876

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 37, 44, 46, 55, 74, 92, 101, 110, 115, 148, 185, 202, 220, 230, 253, 370, 404, 407, 460, 505, 506, 740, 814, 851, 1010, 1012, 1111, 1265, 1628, 1702, 2020, 2035, 2222, 2323, 2530, 3404, 3737, 4070, 4255, 4444, 4646, 5060, 5555, 7474, 8140, 8510, 9292, 9361, 11110, 11615, 14948, 17020, 18685, 18722, 22220, 23230, 25553, 37370, 37444, 41107, 46460, 46805, 51106, 74740, 82214, 85951, 93610, 102212, 127765, 164428, 171902, 187220, 205535, 255530, 343804, 411070, 429755, 511060, 822140, 859510, 945461, 1719020, 1890922, 3781844, 4727305, 9454610, 18909220]

約数ペア:

[(1, 18909220), (2, 9454610), (4, 4727305), (5, 3781844), (10, 1890922), (11, 1719020), (20, 945461), (22, 859510), (23, 822140), (37, 511060), (44, 429755), (46, 411070), (55, 343804), (74, 255530), (92, 205535), (101, 187220), (110, 171902), (115, 164428), (148, 127765), (185, 102212), (202, 93610), (220, 85951), (230, 82214), (253, 74740), (370, 51106), (404, 46805), (407, 46460), (460, 41107), (505, 37444), (506, 37370), (740, 25553), (814, 23230), (851, 22220), (1010, 18722), (1012, 18685), (1111, 17020), (1265, 14948), (1628, 11615), (1702, 11110), (2020, 9361), (2035, 9292), (2222, 8510), (2323, 8140), (2530, 7474), (3404, 5555), (3737, 5060), (4070, 4646), (4255, 4444)]