21081816

素因数分解:

$2^3\times 3^3\times 7^1\times {\mathrm{73}}^1\times {\mathrm{191}}^1$

素因数の和:286

約数の個数: 128

約数和(自身を含む): 68198400

約数和(自身を除く): 47116584

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 14, 18, 21, 24, 27, 28, 36, 42, 54, 56, 63, 72, 73, 84, 108, 126, 146, 168, 189, 191, 216, 219, 252, 292, 378, 382, 438, 504, 511, 573, 584, 657, 756, 764, 876, 1022, 1146, 1314, 1337, 1512, 1528, 1533, 1719, 1752, 1971, 2044, 2292, 2628, 2674, 3066, 3438, 3942, 4011, 4088, 4584, 4599, 5157, 5256, 5348, 6132, 6876, 7884, 8022, 9198, 10314, 10696, 12033, 12264, 13752, 13797, 13943, 15768, 16044, 18396, 20628, 24066, 27594, 27886, 32088, 36099, 36792, 41256, 41829, 48132, 55188, 55772, 72198, 83658, 96264, 97601, 110376, 111544, 125487, 144396, 167316, 195202, 250974, 288792, 292803, 334632, 376461, 390404, 501948, 585606, 752922, 780808, 878409, 1003896, 1171212, 1505844, 1756818, 2342424, 2635227, 3011688, 3513636, 5270454, 7027272, 10540908, 21081816]

約数ペア:

[(1, 21081816), (2, 10540908), (3, 7027272), (4, 5270454), (6, 3513636), (7, 3011688), (8, 2635227), (9, 2342424), (12, 1756818), (14, 1505844), (18, 1171212), (21, 1003896), (24, 878409), (27, 780808), (28, 752922), (36, 585606), (42, 501948), (54, 390404), (56, 376461), (63, 334632), (72, 292803), (73, 288792), (84, 250974), (108, 195202), (126, 167316), (146, 144396), (168, 125487), (189, 111544), (191, 110376), (216, 97601), (219, 96264), (252, 83658), (292, 72198), (378, 55772), (382, 55188), (438, 48132), (504, 41829), (511, 41256), (573, 36792), (584, 36099), (657, 32088), (756, 27886), (764, 27594), (876, 24066), (1022, 20628), (1146, 18396), (1314, 16044), (1337, 15768), (1512, 13943), (1528, 13797), (1533, 13752), (1719, 12264), (1752, 12033), (1971, 10696), (2044, 10314), (2292, 9198), (2628, 8022), (2674, 7884), (3066, 6876), (3438, 6132), (3942, 5348), (4011, 5256), (4088, 5157), (4584, 4599)]