19817440

素因数分解:

$2^5\times 5^1\times {\mathrm{29}}^1\times {\mathrm{4271}}^1$

素因数の和:4315

約数の個数: 48

約数和(自身を含む): 48444480

約数和(自身を除く): 28627040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 29, 32, 40, 58, 80, 116, 145, 160, 232, 290, 464, 580, 928, 1160, 2320, 4271, 4640, 8542, 17084, 21355, 34168, 42710, 68336, 85420, 123859, 136672, 170840, 247718, 341680, 495436, 619295, 683360, 990872, 1238590, 1981744, 2477180, 3963488, 4954360, 9908720, 19817440]

約数ペア:

[(1, 19817440), (2, 9908720), (4, 4954360), (5, 3963488), (8, 2477180), (10, 1981744), (16, 1238590), (20, 990872), (29, 683360), (32, 619295), (40, 495436), (58, 341680), (80, 247718), (116, 170840), (145, 136672), (160, 123859), (232, 85420), (290, 68336), (464, 42710), (580, 34168), (928, 21355), (1160, 17084), (2320, 8542), (4271, 4640)]