21392028

素因数分解:

$2^2\times 3^2\times 7^2\times {\mathrm{67}}^1\times {\mathrm{181}}^1$

素因数の和:272

約数の個数: 108

約数和(自身を含む): 64194312

約数和(自身を除く): 42802284

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 49, 63, 67, 84, 98, 126, 134, 147, 181, 196, 201, 252, 268, 294, 362, 402, 441, 469, 543, 588, 603, 724, 804, 882, 938, 1086, 1206, 1267, 1407, 1629, 1764, 1876, 2172, 2412, 2534, 2814, 3258, 3283, 3801, 4221, 5068, 5628, 6516, 6566, 7602, 8442, 8869, 9849, 11403, 12127, 13132, 15204, 16884, 17738, 19698, 22806, 24254, 26607, 29547, 35476, 36381, 39396, 45612, 48508, 53214, 59094, 72762, 79821, 84889, 106428, 109143, 118188, 145524, 159642, 169778, 218286, 254667, 319284, 339556, 436572, 509334, 594223, 764001, 1018668, 1188446, 1528002, 1782669, 2376892, 3056004, 3565338, 5348007, 7130676, 10696014, 21392028]

約数ペア:

[(1, 21392028), (2, 10696014), (3, 7130676), (4, 5348007), (6, 3565338), (7, 3056004), (9, 2376892), (12, 1782669), (14, 1528002), (18, 1188446), (21, 1018668), (28, 764001), (36, 594223), (42, 509334), (49, 436572), (63, 339556), (67, 319284), (84, 254667), (98, 218286), (126, 169778), (134, 159642), (147, 145524), (181, 118188), (196, 109143), (201, 106428), (252, 84889), (268, 79821), (294, 72762), (362, 59094), (402, 53214), (441, 48508), (469, 45612), (543, 39396), (588, 36381), (603, 35476), (724, 29547), (804, 26607), (882, 24254), (938, 22806), (1086, 19698), (1206, 17738), (1267, 16884), (1407, 15204), (1629, 13132), (1764, 12127), (1876, 11403), (2172, 9849), (2412, 8869), (2534, 8442), (2814, 7602), (3258, 6566), (3283, 6516), (3801, 5628), (4221, 5068)]