21631428

素因数分解:

$2^2\times 3^3\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:135

約数の個数: 192

約数和(自身を含む): 72253440

約数和(自身を除く): 50622012

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 13, 14, 18, 21, 26, 27, 28, 31, 36, 39, 42, 52, 54, 62, 63, 71, 78, 84, 91, 93, 108, 117, 124, 126, 142, 156, 182, 186, 189, 213, 217, 234, 252, 273, 279, 284, 351, 364, 372, 378, 403, 426, 434, 468, 497, 546, 558, 639, 651, 702, 756, 806, 819, 837, 852, 868, 923, 994, 1092, 1116, 1209, 1278, 1302, 1404, 1491, 1612, 1638, 1674, 1846, 1917, 1953, 1988, 2201, 2418, 2457, 2556, 2604, 2769, 2821, 2982, 3276, 3348, 3627, 3692, 3834, 3906, 4402, 4473, 4836, 4914, 5538, 5642, 5859, 5964, 6461, 6603, 7254, 7668, 7812, 8307, 8463, 8804, 8946, 9828, 10881, 11076, 11284, 11718, 12922, 13206, 13419, 14508, 15407, 16614, 16926, 17892, 19383, 19809, 21762, 23436, 24921, 25389, 25844, 26412, 26838, 28613, 30814, 33228, 33852, 38766, 39618, 43524, 46221, 49842, 50778, 53676, 57226, 58149, 59427, 61628, 76167, 77532, 79236, 85839, 92442, 99684, 101556, 114452, 116298, 118854, 138663, 152334, 171678, 174447, 184884, 200291, 232596, 237708, 257517, 277326, 304668, 343356, 348894, 400582, 415989, 515034, 554652, 600873, 697788, 772551, 801164, 831978, 1030068, 1201746, 1545102, 1663956, 1802619, 2403492, 3090204, 3605238, 5407857, 7210476, 10815714, 21631428]

約数ペア:

[(1, 21631428), (2, 10815714), (3, 7210476), (4, 5407857), (6, 3605238), (7, 3090204), (9, 2403492), (12, 1802619), (13, 1663956), (14, 1545102), (18, 1201746), (21, 1030068), (26, 831978), (27, 801164), (28, 772551), (31, 697788), (36, 600873), (39, 554652), (42, 515034), (52, 415989), (54, 400582), (62, 348894), (63, 343356), (71, 304668), (78, 277326), (84, 257517), (91, 237708), (93, 232596), (108, 200291), (117, 184884), (124, 174447), (126, 171678), (142, 152334), (156, 138663), (182, 118854), (186, 116298), (189, 114452), (213, 101556), (217, 99684), (234, 92442), (252, 85839), (273, 79236), (279, 77532), (284, 76167), (351, 61628), (364, 59427), (372, 58149), (378, 57226), (403, 53676), (426, 50778), (434, 49842), (468, 46221), (497, 43524), (546, 39618), (558, 38766), (639, 33852), (651, 33228), (702, 30814), (756, 28613), (806, 26838), (819, 26412), (837, 25844), (852, 25389), (868, 24921), (923, 23436), (994, 21762), (1092, 19809), (1116, 19383), (1209, 17892), (1278, 16926), (1302, 16614), (1404, 15407), (1491, 14508), (1612, 13419), (1638, 13206), (1674, 12922), (1846, 11718), (1917, 11284), (1953, 11076), (1988, 10881), (2201, 9828), (2418, 8946), (2457, 8804), (2556, 8463), (2604, 8307), (2769, 7812), (2821, 7668), (2982, 7254), (3276, 6603), (3348, 6461), (3627, 5964), (3692, 5859), (3834, 5642), (3906, 5538), (4402, 4914), (4473, 4836)]