21135816

素因数分解:

$2^3\times 3^4\times {\mathrm{13}}^2\times {\mathrm{193}}^1$

素因数の和:237

約数の個数: 120

約数和(自身を含む): 64436130

約数和(自身を除く): 43300314

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 52, 54, 72, 78, 81, 104, 108, 117, 156, 162, 169, 193, 216, 234, 312, 324, 338, 351, 386, 468, 507, 579, 648, 676, 702, 772, 936, 1014, 1053, 1158, 1352, 1404, 1521, 1544, 1737, 2028, 2106, 2316, 2509, 2808, 3042, 3474, 4056, 4212, 4563, 4632, 5018, 5211, 6084, 6948, 7527, 8424, 9126, 10036, 10422, 12168, 13689, 13896, 15054, 15633, 18252, 20072, 20844, 22581, 27378, 30108, 31266, 32617, 36504, 41688, 45162, 54756, 60216, 62532, 65234, 67743, 90324, 97851, 109512, 125064, 130468, 135486, 180648, 195702, 203229, 260936, 270972, 293553, 391404, 406458, 541944, 587106, 782808, 812916, 880659, 1174212, 1625832, 1761318, 2348424, 2641977, 3522636, 5283954, 7045272, 10567908, 21135816]

約数ペア:

[(1, 21135816), (2, 10567908), (3, 7045272), (4, 5283954), (6, 3522636), (8, 2641977), (9, 2348424), (12, 1761318), (13, 1625832), (18, 1174212), (24, 880659), (26, 812916), (27, 782808), (36, 587106), (39, 541944), (52, 406458), (54, 391404), (72, 293553), (78, 270972), (81, 260936), (104, 203229), (108, 195702), (117, 180648), (156, 135486), (162, 130468), (169, 125064), (193, 109512), (216, 97851), (234, 90324), (312, 67743), (324, 65234), (338, 62532), (351, 60216), (386, 54756), (468, 45162), (507, 41688), (579, 36504), (648, 32617), (676, 31266), (702, 30108), (772, 27378), (936, 22581), (1014, 20844), (1053, 20072), (1158, 18252), (1352, 15633), (1404, 15054), (1521, 13896), (1544, 13689), (1737, 12168), (2028, 10422), (2106, 10036), (2316, 9126), (2509, 8424), (2808, 7527), (3042, 6948), (3474, 6084), (4056, 5211), (4212, 5018), (4563, 4632)]