81942320

素因数分解:

$2^4\times 5^1\times {\mathrm{181}}^1\times {\mathrm{5659}}^1$

素因数の和:5853

約数の個数: 40

約数和(自身を含む): 191602320

約数和(自身を除く): 109660000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 181, 362, 724, 905, 1448, 1810, 2896, 3620, 5659, 7240, 11318, 14480, 22636, 28295, 45272, 56590, 90544, 113180, 226360, 452720, 1024279, 2048558, 4097116, 5121395, 8194232, 10242790, 16388464, 20485580, 40971160, 81942320]

約数ペア:

[(1, 81942320), (2, 40971160), (4, 20485580), (5, 16388464), (8, 10242790), (10, 8194232), (16, 5121395), (20, 4097116), (40, 2048558), (80, 1024279), (181, 452720), (362, 226360), (724, 113180), (905, 90544), (1448, 56590), (1810, 45272), (2896, 28295), (3620, 22636), (5659, 14480), (7240, 11318)]