218942720

素因数分解:

$2^8\times 5^1\times {\mathrm{171049}}^1$

素因数の和:171070

約数の個数: 36

約数和(自身を含む): 524439300

約数和(自身を除く): 305496580

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 171049, 342098, 684196, 855245, 1368392, 1710490, 2736784, 3420980, 5473568, 6841960, 10947136, 13683920, 21894272, 27367840, 43788544, 54735680, 109471360, 218942720]

約数ペア:

[(1, 218942720), (2, 109471360), (4, 54735680), (5, 43788544), (8, 27367840), (10, 21894272), (16, 13683920), (20, 10947136), (32, 6841960), (40, 5473568), (64, 3420980), (80, 2736784), (128, 1710490), (160, 1368392), (256, 855245), (320, 684196), (640, 342098), (1280, 171049)]