21253936

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{197}}^1\times {\mathrm{613}}^1$

素因数の和:829

約数の個数: 40

約数和(自身を含む): 45224784

約数和(自身を除く): 23970848

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 197, 394, 613, 788, 1226, 1576, 2167, 2452, 3152, 4334, 4904, 6743, 8668, 9808, 13486, 17336, 26972, 34672, 53944, 107888, 120761, 241522, 483044, 966088, 1328371, 1932176, 2656742, 5313484, 10626968, 21253936]

約数ペア:

[(1, 21253936), (2, 10626968), (4, 5313484), (8, 2656742), (11, 1932176), (16, 1328371), (22, 966088), (44, 483044), (88, 241522), (176, 120761), (197, 107888), (394, 53944), (613, 34672), (788, 26972), (1226, 17336), (1576, 13486), (2167, 9808), (2452, 8668), (3152, 6743), (4334, 4904)]