21322474640

素因数分解:

$2^4\times 5^1\times {\mathrm{1129}}^1\times {\mathrm{236077}}^1$

素因数の和:237219

約数の個数: 40

約数和(自身を含む): 49618874040

約数和(自身を除く): 28296399400

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1129, 2258, 4516, 5645, 9032, 11290, 18064, 22580, 45160, 90320, 236077, 472154, 944308, 1180385, 1888616, 2360770, 3777232, 4721540, 9443080, 18886160, 266530933, 533061866, 1066123732, 1332654665, 2132247464, 2665309330, 4264494928, 5330618660, 10661237320, 21322474640]

約数ペア:

[(1, 21322474640), (2, 10661237320), (4, 5330618660), (5, 4264494928), (8, 2665309330), (10, 2132247464), (16, 1332654665), (20, 1066123732), (40, 533061866), (80, 266530933), (1129, 18886160), (2258, 9443080), (4516, 4721540), (5645, 3777232), (9032, 2360770), (11290, 1888616), (18064, 1180385), (22580, 944308), (45160, 472154), (90320, 236077)]