21357710

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^2\times {\mathrm{19}}^1\times {\mathrm{929}}^1$

素因数の和:977

約数の個数: 48

約数和(自身を含む): 44528400

約数和(自身を除く): 23170690

約数列:

[1, 2, 5, 10, 11, 19, 22, 38, 55, 95, 110, 121, 190, 209, 242, 418, 605, 929, 1045, 1210, 1858, 2090, 2299, 4598, 4645, 9290, 10219, 11495, 17651, 20438, 22990, 35302, 51095, 88255, 102190, 112409, 176510, 194161, 224818, 388322, 562045, 970805, 1124090, 1941610, 2135771, 4271542, 10678855, 21357710]

約数ペア:

[(1, 21357710), (2, 10678855), (5, 4271542), (10, 2135771), (11, 1941610), (19, 1124090), (22, 970805), (38, 562045), (55, 388322), (95, 224818), (110, 194161), (121, 176510), (190, 112409), (209, 102190), (242, 88255), (418, 51095), (605, 35302), (929, 22990), (1045, 20438), (1210, 17651), (1858, 11495), (2090, 10219), (2299, 9290), (4598, 4645)]