21157840

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{24043}}^1$

素因数の和:24067

約数の個数: 40

約数和(自身を含む): 53666208

約数和(自身を除く): 32508368

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 24043, 48086, 96172, 120215, 192344, 240430, 264473, 384688, 480860, 528946, 961720, 1057892, 1322365, 1923440, 2115784, 2644730, 4231568, 5289460, 10578920, 21157840]

約数ペア:

[(1, 21157840), (2, 10578920), (4, 5289460), (5, 4231568), (8, 2644730), (10, 2115784), (11, 1923440), (16, 1322365), (20, 1057892), (22, 961720), (40, 528946), (44, 480860), (55, 384688), (80, 264473), (88, 240430), (110, 192344), (176, 120215), (220, 96172), (440, 48086), (880, 24043)]