21796720790

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{443}}^1\times {\mathrm{461}}^1\times {\mathrm{821}}^1$

素因数の和:1745

約数の個数: 64

約数和(自身を含む): 42491034432

約数和(自身を除く): 20694313642

約数列:

[1, 2, 5, 10, 13, 26, 65, 130, 443, 461, 821, 886, 922, 1642, 2215, 2305, 4105, 4430, 4610, 5759, 5993, 8210, 10673, 11518, 11986, 21346, 28795, 29965, 53365, 57590, 59930, 106730, 204223, 363703, 378481, 408446, 727406, 756962, 1021115, 1818515, 1892405, 2042230, 2654899, 3637030, 3784810, 4728139, 4920253, 5309798, 9456278, 9840506, 13274495, 23640695, 24601265, 26548990, 47281390, 49202530, 167667083, 335334166, 838335415, 1676670830, 2179672079, 4359344158, 10898360395, 21796720790]

約数ペア:

[(1, 21796720790), (2, 10898360395), (5, 4359344158), (10, 2179672079), (13, 1676670830), (26, 838335415), (65, 335334166), (130, 167667083), (443, 49202530), (461, 47281390), (821, 26548990), (886, 24601265), (922, 23640695), (1642, 13274495), (2215, 9840506), (2305, 9456278), (4105, 5309798), (4430, 4920253), (4610, 4728139), (5759, 3784810), (5993, 3637030), (8210, 2654899), (10673, 2042230), (11518, 1892405), (11986, 1818515), (21346, 1021115), (28795, 756962), (29965, 727406), (53365, 408446), (57590, 378481), (59930, 363703), (106730, 204223)]