209304140

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^2\times {\mathrm{73}}^1\times {\mathrm{271}}^1$

素因数の和:399

約数の個数: 72

約数和(自身を含む): 467492928

約数和(自身を除く): 258188788

約数列:

[1, 2, 4, 5, 10, 20, 23, 46, 73, 92, 115, 146, 230, 271, 292, 365, 460, 529, 542, 730, 1058, 1084, 1355, 1460, 1679, 2116, 2645, 2710, 3358, 5290, 5420, 6233, 6716, 8395, 10580, 12466, 16790, 19783, 24932, 31165, 33580, 38617, 39566, 62330, 77234, 79132, 98915, 124660, 143359, 154468, 193085, 197830, 286718, 386170, 395660, 455009, 573436, 716795, 772340, 910018, 1433590, 1820036, 2275045, 2867180, 4550090, 9100180, 10465207, 20930414, 41860828, 52326035, 104652070, 209304140]

約数ペア:

[(1, 209304140), (2, 104652070), (4, 52326035), (5, 41860828), (10, 20930414), (20, 10465207), (23, 9100180), (46, 4550090), (73, 2867180), (92, 2275045), (115, 1820036), (146, 1433590), (230, 910018), (271, 772340), (292, 716795), (365, 573436), (460, 455009), (529, 395660), (542, 386170), (730, 286718), (1058, 197830), (1084, 193085), (1355, 154468), (1460, 143359), (1679, 124660), (2116, 98915), (2645, 79132), (2710, 77234), (3358, 62330), (5290, 39566), (5420, 38617), (6233, 33580), (6716, 31165), (8395, 24932), (10580, 19783), (12466, 16790)]