221513720

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{66721}}^1$

素因数の和:66815

約数の個数: 32

約数和(自身を含む): 504418320

約数和(自身を除く): 282904600

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 66721, 133442, 266884, 333605, 533768, 667210, 1334420, 2668840, 5537843, 11075686, 22151372, 27689215, 44302744, 55378430, 110756860, 221513720]

約数ペア:

[(1, 221513720), (2, 110756860), (4, 55378430), (5, 44302744), (8, 27689215), (10, 22151372), (20, 11075686), (40, 5537843), (83, 2668840), (166, 1334420), (332, 667210), (415, 533768), (664, 333605), (830, 266884), (1660, 133442), (3320, 66721)]