21999705

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:326

約数の個数: 64

約数和(自身を含む): 44126208

約数和(自身を除く): 22126503

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 71, 91, 105, 195, 213, 227, 273, 355, 455, 497, 681, 923, 1065, 1135, 1365, 1491, 1589, 2485, 2769, 2951, 3405, 4615, 4767, 6461, 7455, 7945, 8853, 13845, 14755, 16117, 19383, 20657, 23835, 32305, 44265, 48351, 61971, 80585, 96915, 103285, 112819, 209521, 241755, 309855, 338457, 564095, 628563, 1047605, 1466647, 1692285, 3142815, 4399941, 7333235, 21999705]

約数ペア:

[(1, 21999705), (3, 7333235), (5, 4399941), (7, 3142815), (13, 1692285), (15, 1466647), (21, 1047605), (35, 628563), (39, 564095), (65, 338457), (71, 309855), (91, 241755), (105, 209521), (195, 112819), (213, 103285), (227, 96915), (273, 80585), (355, 61971), (455, 48351), (497, 44265), (681, 32305), (923, 23835), (1065, 20657), (1135, 19383), (1365, 16117), (1491, 14755), (1589, 13845), (2485, 8853), (2769, 7945), (2951, 7455), (3405, 6461), (4615, 4767)]