21319012

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{13}}^2\times {\mathrm{47}}^1\times {\mathrm{61}}^1$

素因数の和:149

約数の個数: 72

約数和(自身を含む): 45747072

約数和(自身を除く): 24428060

約数列:

[1, 2, 4, 11, 13, 22, 26, 44, 47, 52, 61, 94, 122, 143, 169, 188, 244, 286, 338, 517, 572, 611, 671, 676, 793, 1034, 1222, 1342, 1586, 1859, 2068, 2444, 2684, 2867, 3172, 3718, 5734, 6721, 7436, 7943, 8723, 10309, 11468, 13442, 15886, 17446, 20618, 26884, 31537, 31772, 34892, 37271, 41236, 63074, 74542, 87373, 113399, 126148, 149084, 174746, 226798, 349492, 409981, 453596, 484523, 819962, 969046, 1639924, 1938092, 5329753, 10659506, 21319012]

約数ペア:

[(1, 21319012), (2, 10659506), (4, 5329753), (11, 1938092), (13, 1639924), (22, 969046), (26, 819962), (44, 484523), (47, 453596), (52, 409981), (61, 349492), (94, 226798), (122, 174746), (143, 149084), (169, 126148), (188, 113399), (244, 87373), (286, 74542), (338, 63074), (517, 41236), (572, 37271), (611, 34892), (671, 31772), (676, 31537), (793, 26884), (1034, 20618), (1222, 17446), (1342, 15886), (1586, 13442), (1859, 11468), (2068, 10309), (2444, 8723), (2684, 7943), (2867, 7436), (3172, 6721), (3718, 5734)]