19982768

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{4177}}^1$

素因数の和:4221

約数の個数: 40

約数和(自身を含む): 43518048

約数和(自身を除く): 23535280

約数列:

[1, 2, 4, 8, 13, 16, 23, 26, 46, 52, 92, 104, 184, 208, 299, 368, 598, 1196, 2392, 4177, 4784, 8354, 16708, 33416, 54301, 66832, 96071, 108602, 192142, 217204, 384284, 434408, 768568, 868816, 1248923, 1537136, 2497846, 4995692, 9991384, 19982768]

約数ペア:

[(1, 19982768), (2, 9991384), (4, 4995692), (8, 2497846), (13, 1537136), (16, 1248923), (23, 868816), (26, 768568), (46, 434408), (52, 384284), (92, 217204), (104, 192142), (184, 108602), (208, 96071), (299, 66832), (368, 54301), (598, 33416), (1196, 16708), (2392, 8354), (4177, 4784)]