18542260

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{947}}^1$

素因数の和:1056

約数の個数: 48

約数和(自身を含む): 43001280

約数和(自身を除く): 24459020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 89, 110, 178, 220, 356, 445, 890, 947, 979, 1780, 1894, 1958, 3788, 3916, 4735, 4895, 9470, 9790, 10417, 18940, 19580, 20834, 41668, 52085, 84283, 104170, 168566, 208340, 337132, 421415, 842830, 927113, 1685660, 1854226, 3708452, 4635565, 9271130, 18542260]

約数ペア:

[(1, 18542260), (2, 9271130), (4, 4635565), (5, 3708452), (10, 1854226), (11, 1685660), (20, 927113), (22, 842830), (44, 421415), (55, 337132), (89, 208340), (110, 168566), (178, 104170), (220, 84283), (356, 52085), (445, 41668), (890, 20834), (947, 19580), (979, 18940), (1780, 10417), (1894, 9790), (1958, 9470), (3788, 4895), (3916, 4735)]