21124390

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2269}}^1$

素因数の和:2309

約数の個数: 48

約数和(自身を含む): 46580400

約数和(自身を除く): 25456010

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2269, 4538, 4655, 9310, 11345, 15883, 22690, 31766, 43111, 79415, 86222, 111181, 158830, 215555, 222362, 301777, 431110, 555905, 603554, 1111810, 1508885, 2112439, 3017770, 4224878, 10562195, 21124390]

約数ペア:

[(1, 21124390), (2, 10562195), (5, 4224878), (7, 3017770), (10, 2112439), (14, 1508885), (19, 1111810), (35, 603554), (38, 555905), (49, 431110), (70, 301777), (95, 222362), (98, 215555), (133, 158830), (190, 111181), (245, 86222), (266, 79415), (490, 43111), (665, 31766), (931, 22690), (1330, 15883), (1862, 11345), (2269, 9310), (4538, 4655)]