18743480

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{73}}^1\times {\mathrm{131}}^1$

素因数の和:229

約数の個数: 96

約数和(自身を含む): 50109840

約数和(自身を除く): 31366360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 73, 98, 131, 140, 146, 196, 245, 262, 280, 292, 365, 392, 490, 511, 524, 584, 655, 730, 917, 980, 1022, 1048, 1310, 1460, 1834, 1960, 2044, 2555, 2620, 2920, 3577, 3668, 4088, 4585, 5110, 5240, 6419, 7154, 7336, 9170, 9563, 10220, 12838, 14308, 17885, 18340, 19126, 20440, 25676, 28616, 32095, 35770, 36680, 38252, 47815, 51352, 64190, 66941, 71540, 76504, 95630, 128380, 133882, 143080, 191260, 256760, 267764, 334705, 382520, 468587, 535528, 669410, 937174, 1338820, 1874348, 2342935, 2677640, 3748696, 4685870, 9371740, 18743480]

約数ペア:

[(1, 18743480), (2, 9371740), (4, 4685870), (5, 3748696), (7, 2677640), (8, 2342935), (10, 1874348), (14, 1338820), (20, 937174), (28, 669410), (35, 535528), (40, 468587), (49, 382520), (56, 334705), (70, 267764), (73, 256760), (98, 191260), (131, 143080), (140, 133882), (146, 128380), (196, 95630), (245, 76504), (262, 71540), (280, 66941), (292, 64190), (365, 51352), (392, 47815), (490, 38252), (511, 36680), (524, 35770), (584, 32095), (655, 28616), (730, 25676), (917, 20440), (980, 19126), (1022, 18340), (1048, 17885), (1310, 14308), (1460, 12838), (1834, 10220), (1960, 9563), (2044, 9170), (2555, 7336), (2620, 7154), (2920, 6419), (3577, 5240), (3668, 5110), (4088, 4585)]