20215468

素因数分解:

$2^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{79}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 47667200

約数和(自身を除く): 27451732

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 37, 38, 52, 74, 76, 79, 91, 133, 148, 158, 182, 247, 259, 266, 316, 364, 481, 494, 518, 532, 553, 703, 962, 988, 1027, 1036, 1106, 1406, 1501, 1729, 1924, 2054, 2212, 2812, 2923, 3002, 3367, 3458, 4108, 4921, 5846, 6004, 6734, 6916, 7189, 9139, 9842, 10507, 11692, 13468, 14378, 18278, 19513, 19684, 20461, 21014, 28756, 36556, 37999, 39026, 40922, 42028, 55537, 63973, 75998, 78052, 81844, 111074, 127946, 136591, 151996, 222148, 255892, 265993, 273182, 388759, 531986, 546364, 721981, 777518, 1063972, 1443962, 1555036, 2887924, 5053867, 10107734, 20215468]

約数ペア:

[(1, 20215468), (2, 10107734), (4, 5053867), (7, 2887924), (13, 1555036), (14, 1443962), (19, 1063972), (26, 777518), (28, 721981), (37, 546364), (38, 531986), (52, 388759), (74, 273182), (76, 265993), (79, 255892), (91, 222148), (133, 151996), (148, 136591), (158, 127946), (182, 111074), (247, 81844), (259, 78052), (266, 75998), (316, 63973), (364, 55537), (481, 42028), (494, 40922), (518, 39026), (532, 37999), (553, 36556), (703, 28756), (962, 21014), (988, 20461), (1027, 19684), (1036, 19513), (1106, 18278), (1406, 14378), (1501, 13468), (1729, 11692), (1924, 10507), (2054, 9842), (2212, 9139), (2812, 7189), (2923, 6916), (3002, 6734), (3367, 6004), (3458, 5846), (4108, 4921)]