20128036496

素因数分解:

$2^4\times {\mathrm{29}}^2\times {\mathrm{43}}^2\times {\mathrm{809}}^1$

素因数の和:961

約数の個数: 90

約数和(自身を含む): 41401443330

約数和(自身を除く): 21273406834

約数列:

[1, 2, 4, 8, 16, 29, 43, 58, 86, 116, 172, 232, 344, 464, 688, 809, 841, 1247, 1618, 1682, 1849, 2494, 3236, 3364, 3698, 4988, 6472, 6728, 7396, 9976, 12944, 13456, 14792, 19952, 23461, 29584, 34787, 36163, 46922, 53621, 69574, 72326, 93844, 107242, 139148, 144652, 187688, 214484, 278296, 289304, 375376, 428968, 556592, 578608, 680369, 857936, 1008823, 1360738, 1495841, 1555009, 2017646, 2721476, 2991682, 3110018, 4035292, 5442952, 5983364, 6220036, 8070584, 10885904, 11966728, 12440072, 16141168, 23933456, 24880144, 29255867, 43379389, 58511734, 86758778, 117023468, 173517556, 234046936, 347035112, 468093872, 694070224, 1258002281, 2516004562, 5032009124, 10064018248, 20128036496]

約数ペア:

[(1, 20128036496), (2, 10064018248), (4, 5032009124), (8, 2516004562), (16, 1258002281), (29, 694070224), (43, 468093872), (58, 347035112), (86, 234046936), (116, 173517556), (172, 117023468), (232, 86758778), (344, 58511734), (464, 43379389), (688, 29255867), (809, 24880144), (841, 23933456), (1247, 16141168), (1618, 12440072), (1682, 11966728), (1849, 10885904), (2494, 8070584), (3236, 6220036), (3364, 5983364), (3698, 5442952), (4988, 4035292), (6472, 3110018), (6728, 2991682), (7396, 2721476), (9976, 2017646), (12944, 1555009), (13456, 1495841), (14792, 1360738), (19952, 1008823), (23461, 857936), (29584, 680369), (34787, 578608), (36163, 556592), (46922, 428968), (53621, 375376), (69574, 289304), (72326, 278296), (93844, 214484), (107242, 187688), (139148, 144652)]