1821984885

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{28493}}^1$

素因数の和:28547

約数の個数: 72

約数和(自身を含む): 3800529720

約数和(自身を除く): 1978544835

約数列:

[1, 3, 5, 7, 9, 15, 21, 29, 35, 45, 49, 63, 87, 105, 145, 147, 203, 245, 261, 315, 435, 441, 609, 735, 1015, 1305, 1421, 1827, 2205, 3045, 4263, 7105, 9135, 12789, 21315, 28493, 63945, 85479, 142465, 199451, 256437, 427395, 598353, 826297, 997255, 1282185, 1396157, 1795059, 2478891, 2991765, 4131485, 4188471, 5784079, 6980785, 7436673, 8975295, 12394455, 12565413, 17352237, 20942355, 28920395, 37183365, 40488553, 52056711, 62827065, 86761185, 121465659, 202442765, 260283555, 364396977, 607328295, 1821984885]

約数ペア:

[(1, 1821984885), (3, 607328295), (5, 364396977), (7, 260283555), (9, 202442765), (15, 121465659), (21, 86761185), (29, 62827065), (35, 52056711), (45, 40488553), (49, 37183365), (63, 28920395), (87, 20942355), (105, 17352237), (145, 12565413), (147, 12394455), (203, 8975295), (245, 7436673), (261, 6980785), (315, 5784079), (435, 4188471), (441, 4131485), (609, 2991765), (735, 2478891), (1015, 1795059), (1305, 1396157), (1421, 1282185), (1827, 997255), (2205, 826297), (3045, 598353), (4263, 427395), (7105, 256437), (9135, 199451), (12789, 142465), (21315, 85479), (28493, 63945)]