81514575

素因数分解:

$3^2\times 5^2\times {\mathrm{17}}^1\times {\mathrm{101}}^1\times {\mathrm{211}}^1$

素因数の和:345

約数の個数: 72

約数和(自身を含む): 156860496

約数和(自身を除く): 75345921

約数列:

[1, 3, 5, 9, 15, 17, 25, 45, 51, 75, 85, 101, 153, 211, 225, 255, 303, 425, 505, 633, 765, 909, 1055, 1275, 1515, 1717, 1899, 2525, 3165, 3587, 3825, 4545, 5151, 5275, 7575, 8585, 9495, 10761, 15453, 15825, 17935, 21311, 22725, 25755, 32283, 42925, 47475, 53805, 63933, 77265, 89675, 106555, 128775, 161415, 191799, 269025, 319665, 362287, 386325, 532775, 807075, 958995, 1086861, 1598325, 1811435, 3260583, 4794975, 5434305, 9057175, 16302915, 27171525, 81514575]

約数ペア:

[(1, 81514575), (3, 27171525), (5, 16302915), (9, 9057175), (15, 5434305), (17, 4794975), (25, 3260583), (45, 1811435), (51, 1598325), (75, 1086861), (85, 958995), (101, 807075), (153, 532775), (211, 386325), (225, 362287), (255, 319665), (303, 269025), (425, 191799), (505, 161415), (633, 128775), (765, 106555), (909, 89675), (1055, 77265), (1275, 63933), (1515, 53805), (1717, 47475), (1899, 42925), (2525, 32283), (3165, 25755), (3587, 22725), (3825, 21311), (4545, 17935), (5151, 15825), (5275, 15453), (7575, 10761), (8585, 9495)]