21509784

素因数分解:

$2^3\times 3^2\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:485

約数の個数: 96

約数和(自身を含む): 62899200

約数和(自身を除く): 41389416

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 23, 24, 31, 36, 46, 62, 69, 72, 92, 93, 124, 138, 184, 186, 207, 248, 276, 279, 372, 414, 419, 552, 558, 713, 744, 828, 838, 1116, 1257, 1426, 1656, 1676, 2139, 2232, 2514, 2852, 3352, 3771, 4278, 5028, 5704, 6417, 7542, 8556, 9637, 10056, 12834, 12989, 15084, 17112, 19274, 25668, 25978, 28911, 30168, 38548, 38967, 51336, 51956, 57822, 77096, 77934, 86733, 103912, 115644, 116901, 155868, 173466, 231288, 233802, 298747, 311736, 346932, 467604, 597494, 693864, 896241, 935208, 1194988, 1792482, 2389976, 2688723, 3584964, 5377446, 7169928, 10754892, 21509784]

約数ペア:

[(1, 21509784), (2, 10754892), (3, 7169928), (4, 5377446), (6, 3584964), (8, 2688723), (9, 2389976), (12, 1792482), (18, 1194988), (23, 935208), (24, 896241), (31, 693864), (36, 597494), (46, 467604), (62, 346932), (69, 311736), (72, 298747), (92, 233802), (93, 231288), (124, 173466), (138, 155868), (184, 116901), (186, 115644), (207, 103912), (248, 86733), (276, 77934), (279, 77096), (372, 57822), (414, 51956), (419, 51336), (552, 38967), (558, 38548), (713, 30168), (744, 28911), (828, 25978), (838, 25668), (1116, 19274), (1257, 17112), (1426, 15084), (1656, 12989), (1676, 12834), (2139, 10056), (2232, 9637), (2514, 8556), (2852, 7542), (3352, 6417), (3771, 5704), (4278, 5028)]