21319712

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{83}}^1\times {\mathrm{349}}^1$

素因数の和:465

約数の個数: 48

約数和(自身を含む): 44452800

約数和(自身を除く): 23133088

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 83, 92, 166, 184, 332, 349, 368, 664, 698, 736, 1328, 1396, 1909, 2656, 2792, 3818, 5584, 7636, 8027, 11168, 15272, 16054, 28967, 30544, 32108, 57934, 61088, 64216, 115868, 128432, 231736, 256864, 463472, 666241, 926944, 1332482, 2664964, 5329928, 10659856, 21319712]

約数ペア:

[(1, 21319712), (2, 10659856), (4, 5329928), (8, 2664964), (16, 1332482), (23, 926944), (32, 666241), (46, 463472), (83, 256864), (92, 231736), (166, 128432), (184, 115868), (332, 64216), (349, 61088), (368, 57934), (664, 32108), (698, 30544), (736, 28967), (1328, 16054), (1396, 15272), (1909, 11168), (2656, 8027), (2792, 7636), (3818, 5584)]