21339990

素因数分解:

$2^1\times 3^3\times 5^1\times 7^2\times {\mathrm{1613}}^1$

素因数の和:1643

約数の個数: 96

約数和(自身を含む): 66238560

約数和(自身を除く): 44898570

約数列:

[1, 2, 3, 5, 6, 7, 9, 10, 14, 15, 18, 21, 27, 30, 35, 42, 45, 49, 54, 63, 70, 90, 98, 105, 126, 135, 147, 189, 210, 245, 270, 294, 315, 378, 441, 490, 630, 735, 882, 945, 1323, 1470, 1613, 1890, 2205, 2646, 3226, 4410, 4839, 6615, 8065, 9678, 11291, 13230, 14517, 16130, 22582, 24195, 29034, 33873, 43551, 48390, 56455, 67746, 72585, 79037, 87102, 101619, 112910, 145170, 158074, 169365, 203238, 217755, 237111, 304857, 338730, 395185, 435510, 474222, 508095, 609714, 711333, 790370, 1016190, 1185555, 1422666, 1524285, 2133999, 2371110, 3048570, 3556665, 4267998, 7113330, 10669995, 21339990]

約数ペア:

[(1, 21339990), (2, 10669995), (3, 7113330), (5, 4267998), (6, 3556665), (7, 3048570), (9, 2371110), (10, 2133999), (14, 1524285), (15, 1422666), (18, 1185555), (21, 1016190), (27, 790370), (30, 711333), (35, 609714), (42, 508095), (45, 474222), (49, 435510), (54, 395185), (63, 338730), (70, 304857), (90, 237111), (98, 217755), (105, 203238), (126, 169365), (135, 158074), (147, 145170), (189, 112910), (210, 101619), (245, 87102), (270, 79037), (294, 72585), (315, 67746), (378, 56455), (441, 48390), (490, 43551), (630, 33873), (735, 29034), (882, 24195), (945, 22582), (1323, 16130), (1470, 14517), (1613, 13230), (1890, 11291), (2205, 9678), (2646, 8065), (3226, 6615), (4410, 4839)]