20921172489

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{443}}^1\times {\mathrm{25849}}^1$

素因数の和:26334

約数の個数: 48

約数和(自身を含む): 35809488000

約数和(自身を除く): 14888315511

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 443, 609, 1329, 1827, 3101, 3987, 9303, 12847, 25849, 27909, 38541, 77547, 89929, 115623, 180943, 232641, 269787, 542829, 749621, 809361, 1628487, 2248863, 5247347, 6746589, 11451107, 15742041, 34353321, 47226123, 80157749, 103059963, 240473247, 332082103, 721419741, 996246309, 2324574721, 2988738927, 6973724163, 20921172489]

約数ペア:

[(1, 20921172489), (3, 6973724163), (7, 2988738927), (9, 2324574721), (21, 996246309), (29, 721419741), (63, 332082103), (87, 240473247), (203, 103059963), (261, 80157749), (443, 47226123), (609, 34353321), (1329, 15742041), (1827, 11451107), (3101, 6746589), (3987, 5247347), (9303, 2248863), (12847, 1628487), (25849, 809361), (27909, 749621), (38541, 542829), (77547, 269787), (89929, 232641), (115623, 180943)]