18205125820

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{53}}^1\times {\mathrm{350503}}^1$

素因数の和:350579

約数の個数: 72

約数和(自身を含む): 45311755104

約数和(自身を除く): 27106629284

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 53, 70, 98, 106, 140, 196, 212, 245, 265, 371, 490, 530, 742, 980, 1060, 1484, 1855, 2597, 3710, 5194, 7420, 10388, 12985, 25970, 51940, 350503, 701006, 1402012, 1752515, 2453521, 3505030, 4907042, 7010060, 9814084, 12267605, 17174647, 18576659, 24535210, 34349294, 37153318, 49070420, 68698588, 74306636, 85873235, 92883295, 130036613, 171746470, 185766590, 260073226, 343492940, 371533180, 520146452, 650183065, 910256291, 1300366130, 1820512582, 2600732260, 3641025164, 4551281455, 9102562910, 18205125820]

約数ペア:

[(1, 18205125820), (2, 9102562910), (4, 4551281455), (5, 3641025164), (7, 2600732260), (10, 1820512582), (14, 1300366130), (20, 910256291), (28, 650183065), (35, 520146452), (49, 371533180), (53, 343492940), (70, 260073226), (98, 185766590), (106, 171746470), (140, 130036613), (196, 92883295), (212, 85873235), (245, 74306636), (265, 68698588), (371, 49070420), (490, 37153318), (530, 34349294), (742, 24535210), (980, 18576659), (1060, 17174647), (1484, 12267605), (1855, 9814084), (2597, 7010060), (3710, 4907042), (5194, 3505030), (7420, 2453521), (10388, 1752515), (12985, 1402012), (25970, 701006), (51940, 350503)]