21476940

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:311

約数の個数: 96

約数和(自身を含む): 63866880

約数和(自身を除く): 42389940

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 60, 69, 79, 92, 115, 138, 158, 197, 230, 237, 276, 316, 345, 394, 395, 460, 474, 591, 690, 788, 790, 948, 985, 1182, 1185, 1380, 1580, 1817, 1970, 2364, 2370, 2955, 3634, 3940, 4531, 4740, 5451, 5910, 7268, 9062, 9085, 10902, 11820, 13593, 15563, 18124, 18170, 21804, 22655, 27186, 27255, 31126, 36340, 45310, 46689, 54372, 54510, 62252, 67965, 77815, 90620, 93378, 109020, 135930, 155630, 186756, 233445, 271860, 311260, 357949, 466890, 715898, 933780, 1073847, 1431796, 1789745, 2147694, 3579490, 4295388, 5369235, 7158980, 10738470, 21476940]

約数ペア:

[(1, 21476940), (2, 10738470), (3, 7158980), (4, 5369235), (5, 4295388), (6, 3579490), (10, 2147694), (12, 1789745), (15, 1431796), (20, 1073847), (23, 933780), (30, 715898), (46, 466890), (60, 357949), (69, 311260), (79, 271860), (92, 233445), (115, 186756), (138, 155630), (158, 135930), (197, 109020), (230, 93378), (237, 90620), (276, 77815), (316, 67965), (345, 62252), (394, 54510), (395, 54372), (460, 46689), (474, 45310), (591, 36340), (690, 31126), (788, 27255), (790, 27186), (948, 22655), (985, 21804), (1182, 18170), (1185, 18124), (1380, 15563), (1580, 13593), (1817, 11820), (1970, 10902), (2364, 9085), (2370, 9062), (2955, 7268), (3634, 5910), (3940, 5451), (4531, 4740)]