20005978400

素因数分解:

$2^5\times 5^2\times {\mathrm{97}}^1\times {\mathrm{103}}^1\times {\mathrm{2503}}^1$

素因数の和:2723

約数の個数: 144

約数和(自身を含む): 49842059904

約数和(自身を除く): 29836081504

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 80, 97, 100, 103, 160, 194, 200, 206, 388, 400, 412, 485, 515, 776, 800, 824, 970, 1030, 1552, 1648, 1940, 2060, 2425, 2503, 2575, 3104, 3296, 3880, 4120, 4850, 5006, 5150, 7760, 8240, 9700, 9991, 10012, 10300, 12515, 15520, 16480, 19400, 19982, 20024, 20600, 25030, 38800, 39964, 40048, 41200, 49955, 50060, 62575, 77600, 79928, 80096, 82400, 99910, 100120, 125150, 159856, 199820, 200240, 242791, 249775, 250300, 257809, 319712, 399640, 400480, 485582, 499550, 500600, 515618, 799280, 971164, 999100, 1001200, 1031236, 1213955, 1289045, 1598560, 1942328, 1998200, 2002400, 2062472, 2427910, 2578090, 3884656, 3996400, 4124944, 4855820, 5156180, 6069775, 6445225, 7769312, 7992800, 8249888, 9711640, 10312360, 12139550, 12890450, 19423280, 20624720, 24279100, 25007473, 25780900, 38846560, 41249440, 48558200, 50014946, 51561800, 97116400, 100029892, 103123600, 125037365, 194232800, 200059784, 206247200, 250074730, 400119568, 500149460, 625186825, 800239136, 1000298920, 1250373650, 2000597840, 2500747300, 4001195680, 5001494600, 10002989200, 20005978400]

約数ペア:

[(1, 20005978400), (2, 10002989200), (4, 5001494600), (5, 4001195680), (8, 2500747300), (10, 2000597840), (16, 1250373650), (20, 1000298920), (25, 800239136), (32, 625186825), (40, 500149460), (50, 400119568), (80, 250074730), (97, 206247200), (100, 200059784), (103, 194232800), (160, 125037365), (194, 103123600), (200, 100029892), (206, 97116400), (388, 51561800), (400, 50014946), (412, 48558200), (485, 41249440), (515, 38846560), (776, 25780900), (800, 25007473), (824, 24279100), (970, 20624720), (1030, 19423280), (1552, 12890450), (1648, 12139550), (1940, 10312360), (2060, 9711640), (2425, 8249888), (2503, 7992800), (2575, 7769312), (3104, 6445225), (3296, 6069775), (3880, 5156180), (4120, 4855820), (4850, 4124944), (5006, 3996400), (5150, 3884656), (7760, 2578090), (8240, 2427910), (9700, 2062472), (9991, 2002400), (10012, 1998200), (10300, 1942328), (12515, 1598560), (15520, 1289045), (16480, 1213955), (19400, 1031236), (19982, 1001200), (20024, 999100), (20600, 971164), (25030, 799280), (38800, 515618), (39964, 500600), (40048, 499550), (41200, 485582), (49955, 400480), (50060, 399640), (62575, 319712), (77600, 257809), (79928, 250300), (80096, 249775), (82400, 242791), (99910, 200240), (100120, 199820), (125150, 159856)]