20156389610

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{199}}^1\times {\mathrm{421}}^1\times {\mathrm{491}}^1$

素因数の和:1132

約数の個数: 96

約数和(自身を含む): 42604444800

約数和(自身を除く): 22448055190

約数列:

[1, 2, 5, 7, 10, 14, 35, 49, 70, 98, 199, 245, 398, 421, 490, 491, 842, 982, 995, 1393, 1990, 2105, 2455, 2786, 2947, 3437, 4210, 4910, 5894, 6874, 6965, 9751, 13930, 14735, 17185, 19502, 20629, 24059, 29470, 34370, 41258, 48118, 48755, 83779, 97510, 97709, 103145, 120295, 167558, 195418, 206290, 206711, 240590, 413422, 418895, 488545, 586453, 683963, 837790, 977090, 1033555, 1172906, 1367926, 1446977, 2067110, 2893954, 2932265, 3419815, 4105171, 4787741, 5864530, 6839630, 7234885, 8210342, 9575482, 10128839, 14469770, 20257678, 20525855, 23938705, 41051710, 41135489, 47877410, 50644195, 82270978, 101288390, 205677445, 287948423, 411354890, 575896846, 1439742115, 2015638961, 2879484230, 4031277922, 10078194805, 20156389610]

約数ペア:

[(1, 20156389610), (2, 10078194805), (5, 4031277922), (7, 2879484230), (10, 2015638961), (14, 1439742115), (35, 575896846), (49, 411354890), (70, 287948423), (98, 205677445), (199, 101288390), (245, 82270978), (398, 50644195), (421, 47877410), (490, 41135489), (491, 41051710), (842, 23938705), (982, 20525855), (995, 20257678), (1393, 14469770), (1990, 10128839), (2105, 9575482), (2455, 8210342), (2786, 7234885), (2947, 6839630), (3437, 5864530), (4210, 4787741), (4910, 4105171), (5894, 3419815), (6874, 2932265), (6965, 2893954), (9751, 2067110), (13930, 1446977), (14735, 1367926), (17185, 1172906), (19502, 1033555), (20629, 977090), (24059, 837790), (29470, 683963), (34370, 586453), (41258, 488545), (48118, 418895), (48755, 413422), (83779, 240590), (97510, 206711), (97709, 206290), (103145, 195418), (120295, 167558)]