20561904

素因数分解:

$2^4\times 3^3\times {\mathrm{11}}^1\times {\mathrm{4327}}^1$

素因数の和:4355

約数の個数: 80

約数和(自身を含む): 64400640

約数和(自身を除く): 43838736

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 27, 33, 36, 44, 48, 54, 66, 72, 88, 99, 108, 132, 144, 176, 198, 216, 264, 297, 396, 432, 528, 594, 792, 1188, 1584, 2376, 4327, 4752, 8654, 12981, 17308, 25962, 34616, 38943, 47597, 51924, 69232, 77886, 95194, 103848, 116829, 142791, 155772, 190388, 207696, 233658, 285582, 311544, 380776, 428373, 467316, 571164, 623088, 761552, 856746, 934632, 1142328, 1285119, 1713492, 1869264, 2284656, 2570238, 3426984, 5140476, 6853968, 10280952, 20561904]

約数ペア:

[(1, 20561904), (2, 10280952), (3, 6853968), (4, 5140476), (6, 3426984), (8, 2570238), (9, 2284656), (11, 1869264), (12, 1713492), (16, 1285119), (18, 1142328), (22, 934632), (24, 856746), (27, 761552), (33, 623088), (36, 571164), (44, 467316), (48, 428373), (54, 380776), (66, 311544), (72, 285582), (88, 233658), (99, 207696), (108, 190388), (132, 155772), (144, 142791), (176, 116829), (198, 103848), (216, 95194), (264, 77886), (297, 69232), (396, 51924), (432, 47597), (528, 38943), (594, 34616), (792, 25962), (1188, 17308), (1584, 12981), (2376, 8654), (4327, 4752)]