81018440

素因数分解:

$2^3\times 5^1\times {\mathrm{863}}^1\times {\mathrm{2347}}^1$

素因数の和:3221

約数の個数: 32

約数和(自身を含む): 182580480

約数和(自身を除く): 101562040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 863, 1726, 2347, 3452, 4315, 4694, 6904, 8630, 9388, 11735, 17260, 18776, 23470, 34520, 46940, 93880, 2025461, 4050922, 8101844, 10127305, 16203688, 20254610, 40509220, 81018440]

約数ペア:

[(1, 81018440), (2, 40509220), (4, 20254610), (5, 16203688), (8, 10127305), (10, 8101844), (20, 4050922), (40, 2025461), (863, 93880), (1726, 46940), (2347, 34520), (3452, 23470), (4315, 18776), (4694, 17260), (6904, 11735), (8630, 9388)]