213105904

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{139}}^1\times {\mathrm{281}}^1$

素因数の和:470

約数の個数: 80

約数和(自身を含む): 469969920

約数和(自身を除く): 256864016

約数列:

[1, 2, 4, 8, 11, 16, 22, 31, 44, 62, 88, 124, 139, 176, 248, 278, 281, 341, 496, 556, 562, 682, 1112, 1124, 1364, 1529, 2224, 2248, 2728, 3058, 3091, 4309, 4496, 5456, 6116, 6182, 8618, 8711, 12232, 12364, 17236, 17422, 24464, 24728, 34472, 34844, 39059, 47399, 49456, 68944, 69688, 78118, 94798, 95821, 139376, 156236, 189596, 191642, 312472, 379192, 383284, 429649, 624944, 758384, 766568, 859298, 1210829, 1533136, 1718596, 2421658, 3437192, 4843316, 6874384, 9686632, 13319119, 19373264, 26638238, 53276476, 106552952, 213105904]

約数ペア:

[(1, 213105904), (2, 106552952), (4, 53276476), (8, 26638238), (11, 19373264), (16, 13319119), (22, 9686632), (31, 6874384), (44, 4843316), (62, 3437192), (88, 2421658), (124, 1718596), (139, 1533136), (176, 1210829), (248, 859298), (278, 766568), (281, 758384), (341, 624944), (496, 429649), (556, 383284), (562, 379192), (682, 312472), (1112, 191642), (1124, 189596), (1364, 156236), (1529, 139376), (2224, 95821), (2248, 94798), (2728, 78118), (3058, 69688), (3091, 68944), (4309, 49456), (4496, 47399), (5456, 39059), (6116, 34844), (6182, 34472), (8618, 24728), (8711, 24464), (12232, 17422), (12364, 17236)]