209964700

素因数分解:

$2^2\times 5^2\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{193}}^1$

素因数の和:284

約数の個数: 144

約数和(自身を含む): 533465856

約数和(自身を除く): 323501156

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 25, 43, 44, 46, 50, 55, 86, 92, 100, 110, 115, 172, 193, 215, 220, 230, 253, 275, 386, 430, 460, 473, 506, 550, 575, 772, 860, 946, 965, 989, 1012, 1075, 1100, 1150, 1265, 1892, 1930, 1978, 2123, 2150, 2300, 2365, 2530, 3860, 3956, 4246, 4300, 4439, 4730, 4825, 4945, 5060, 6325, 8299, 8492, 8878, 9460, 9650, 9890, 10615, 10879, 11825, 12650, 16598, 17756, 19300, 19780, 21230, 21758, 22195, 23650, 24725, 25300, 33196, 41495, 42460, 43516, 44390, 47300, 48829, 49450, 53075, 54395, 82990, 88780, 91289, 97658, 98900, 106150, 108790, 110975, 165980, 182578, 190877, 195316, 207475, 212300, 217580, 221950, 244145, 271975, 365156, 381754, 414950, 443900, 456445, 488290, 543950, 763508, 829900, 912890, 954385, 976580, 1087900, 1220725, 1825780, 1908770, 2099647, 2282225, 2441450, 3817540, 4199294, 4564450, 4771925, 4882900, 8398588, 9128900, 9543850, 10498235, 19087700, 20996470, 41992940, 52491175, 104982350, 209964700]

約数ペア:

[(1, 209964700), (2, 104982350), (4, 52491175), (5, 41992940), (10, 20996470), (11, 19087700), (20, 10498235), (22, 9543850), (23, 9128900), (25, 8398588), (43, 4882900), (44, 4771925), (46, 4564450), (50, 4199294), (55, 3817540), (86, 2441450), (92, 2282225), (100, 2099647), (110, 1908770), (115, 1825780), (172, 1220725), (193, 1087900), (215, 976580), (220, 954385), (230, 912890), (253, 829900), (275, 763508), (386, 543950), (430, 488290), (460, 456445), (473, 443900), (506, 414950), (550, 381754), (575, 365156), (772, 271975), (860, 244145), (946, 221950), (965, 217580), (989, 212300), (1012, 207475), (1075, 195316), (1100, 190877), (1150, 182578), (1265, 165980), (1892, 110975), (1930, 108790), (1978, 106150), (2123, 98900), (2150, 97658), (2300, 91289), (2365, 88780), (2530, 82990), (3860, 54395), (3956, 53075), (4246, 49450), (4300, 48829), (4439, 47300), (4730, 44390), (4825, 43516), (4945, 42460), (5060, 41495), (6325, 33196), (8299, 25300), (8492, 24725), (8878, 23650), (9460, 22195), (9650, 21758), (9890, 21230), (10615, 19780), (10879, 19300), (11825, 17756), (12650, 16598)]