20355984

素因数分解:

$2^4\times 3^2\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{181}}^1$

素因数の和:277

約数の個数: 120

約数和(自身を含む): 63370944

約数和(自身を除く): 43014960

約数列:

[1, 2, 3, 4, 6, 8, 9, 11, 12, 16, 18, 22, 24, 33, 36, 44, 48, 66, 71, 72, 88, 99, 132, 142, 144, 176, 181, 198, 213, 264, 284, 362, 396, 426, 528, 543, 568, 639, 724, 781, 792, 852, 1086, 1136, 1278, 1448, 1562, 1584, 1629, 1704, 1991, 2172, 2343, 2556, 2896, 3124, 3258, 3408, 3982, 4344, 4686, 5112, 5973, 6248, 6516, 7029, 7964, 8688, 9372, 10224, 11946, 12496, 12851, 13032, 14058, 15928, 17919, 18744, 23892, 25702, 26064, 28116, 31856, 35838, 37488, 38553, 47784, 51404, 56232, 71676, 77106, 95568, 102808, 112464, 115659, 141361, 143352, 154212, 205616, 231318, 282722, 286704, 308424, 424083, 462636, 565444, 616848, 848166, 925272, 1130888, 1272249, 1696332, 1850544, 2261776, 2544498, 3392664, 5088996, 6785328, 10177992, 20355984]

約数ペア:

[(1, 20355984), (2, 10177992), (3, 6785328), (4, 5088996), (6, 3392664), (8, 2544498), (9, 2261776), (11, 1850544), (12, 1696332), (16, 1272249), (18, 1130888), (22, 925272), (24, 848166), (33, 616848), (36, 565444), (44, 462636), (48, 424083), (66, 308424), (71, 286704), (72, 282722), (88, 231318), (99, 205616), (132, 154212), (142, 143352), (144, 141361), (176, 115659), (181, 112464), (198, 102808), (213, 95568), (264, 77106), (284, 71676), (362, 56232), (396, 51404), (426, 47784), (528, 38553), (543, 37488), (568, 35838), (639, 31856), (724, 28116), (781, 26064), (792, 25702), (852, 23892), (1086, 18744), (1136, 17919), (1278, 15928), (1448, 14058), (1562, 13032), (1584, 12851), (1629, 12496), (1704, 11946), (1991, 10224), (2172, 9372), (2343, 8688), (2556, 7964), (2896, 7029), (3124, 6516), (3258, 6248), (3408, 5973), (3982, 5112), (4344, 4686)]