21282534

素因数分解:

$2^1\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{61}}^1\times {\mathrm{71}}^1$

素因数の和:163

約数の個数: 128

約数和(自身を含む): 59996160

約数和(自身を除く): 38713626

約数列:

[1, 2, 3, 6, 7, 9, 13, 14, 18, 21, 26, 27, 39, 42, 54, 61, 63, 71, 78, 91, 117, 122, 126, 142, 182, 183, 189, 213, 234, 273, 351, 366, 378, 426, 427, 497, 546, 549, 639, 702, 793, 819, 854, 923, 994, 1098, 1278, 1281, 1491, 1586, 1638, 1647, 1846, 1917, 2379, 2457, 2562, 2769, 2982, 3294, 3834, 3843, 4331, 4473, 4758, 4914, 5538, 5551, 6461, 7137, 7686, 8307, 8662, 8946, 11102, 11529, 12922, 12993, 13419, 14274, 16614, 16653, 19383, 21411, 23058, 24921, 25986, 26838, 30317, 33306, 38766, 38979, 42822, 49842, 49959, 56303, 58149, 60634, 77958, 90951, 99918, 112606, 116298, 116937, 149877, 168909, 174447, 181902, 233874, 272853, 299754, 337818, 348894, 394121, 506727, 545706, 788242, 818559, 1013454, 1182363, 1520181, 1637118, 2364726, 3040362, 3547089, 7094178, 10641267, 21282534]

約数ペア:

[(1, 21282534), (2, 10641267), (3, 7094178), (6, 3547089), (7, 3040362), (9, 2364726), (13, 1637118), (14, 1520181), (18, 1182363), (21, 1013454), (26, 818559), (27, 788242), (39, 545706), (42, 506727), (54, 394121), (61, 348894), (63, 337818), (71, 299754), (78, 272853), (91, 233874), (117, 181902), (122, 174447), (126, 168909), (142, 149877), (182, 116937), (183, 116298), (189, 112606), (213, 99918), (234, 90951), (273, 77958), (351, 60634), (366, 58149), (378, 56303), (426, 49959), (427, 49842), (497, 42822), (546, 38979), (549, 38766), (639, 33306), (702, 30317), (793, 26838), (819, 25986), (854, 24921), (923, 23058), (994, 21411), (1098, 19383), (1278, 16653), (1281, 16614), (1491, 14274), (1586, 13419), (1638, 12993), (1647, 12922), (1846, 11529), (1917, 11102), (2379, 8946), (2457, 8662), (2562, 8307), (2769, 7686), (2982, 7137), (3294, 6461), (3834, 5551), (3843, 5538), (4331, 4914), (4473, 4758)]