21083345525

素因数分解:

$5^2\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{157}}^1\times {\mathrm{431}}^1$

素因数の和:723

約数の個数: 72

約数和(自身を含む): 29267626752

約数和(自身を除く): 8184281227

約数列:

[1, 5, 11, 25, 55, 103, 121, 157, 275, 431, 515, 605, 785, 1133, 1727, 2155, 2575, 3025, 3925, 4741, 5665, 8635, 10775, 12463, 16171, 18997, 23705, 28325, 43175, 44393, 52151, 62315, 67667, 80855, 94985, 118525, 177881, 221965, 260755, 311575, 338335, 404275, 474925, 488323, 744337, 889405, 1109825, 1303775, 1691675, 1956691, 2441615, 3721685, 4447025, 5371553, 6969701, 8187707, 9783455, 12208075, 18608425, 26857765, 34848505, 40938535, 48917275, 76666711, 134288825, 174242525, 204692675, 383333555, 843333821, 1916667775, 4216669105, 21083345525]

約数ペア:

[(1, 21083345525), (5, 4216669105), (11, 1916667775), (25, 843333821), (55, 383333555), (103, 204692675), (121, 174242525), (157, 134288825), (275, 76666711), (431, 48917275), (515, 40938535), (605, 34848505), (785, 26857765), (1133, 18608425), (1727, 12208075), (2155, 9783455), (2575, 8187707), (3025, 6969701), (3925, 5371553), (4741, 4447025), (5665, 3721685), (8635, 2441615), (10775, 1956691), (12463, 1691675), (16171, 1303775), (18997, 1109825), (23705, 889405), (28325, 744337), (43175, 488323), (44393, 474925), (52151, 404275), (62315, 338335), (67667, 311575), (80855, 260755), (94985, 221965), (118525, 177881)]