81012440

素因数分解:

$2^3\times 5^1\times {\mathrm{23}}^1\times {\mathrm{173}}^1\times {\mathrm{509}}^1$

素因数の和:716

約数の個数: 64

約数和(自身を含む): 191678400

約数和(自身を除く): 110665960

約数列:

[1, 2, 4, 5, 8, 10, 20, 23, 40, 46, 92, 115, 173, 184, 230, 346, 460, 509, 692, 865, 920, 1018, 1384, 1730, 2036, 2545, 3460, 3979, 4072, 5090, 6920, 7958, 10180, 11707, 15916, 19895, 20360, 23414, 31832, 39790, 46828, 58535, 79580, 88057, 93656, 117070, 159160, 176114, 234140, 352228, 440285, 468280, 704456, 880570, 1761140, 2025311, 3522280, 4050622, 8101244, 10126555, 16202488, 20253110, 40506220, 81012440]

約数ペア:

[(1, 81012440), (2, 40506220), (4, 20253110), (5, 16202488), (8, 10126555), (10, 8101244), (20, 4050622), (23, 3522280), (40, 2025311), (46, 1761140), (92, 880570), (115, 704456), (173, 468280), (184, 440285), (230, 352228), (346, 234140), (460, 176114), (509, 159160), (692, 117070), (865, 93656), (920, 88057), (1018, 79580), (1384, 58535), (1730, 46828), (2036, 39790), (2545, 31832), (3460, 23414), (3979, 20360), (4072, 19895), (5090, 15916), (6920, 11707), (7958, 10180)]