21116312

素因数分解:

$2^3\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{541}}^1$

素因数の和:612

約数の個数: 64

約数和(自身を含む): 49170240

約数和(自身を除く): 28053928

約数列:

[1, 2, 4, 7, 8, 14, 17, 28, 34, 41, 56, 68, 82, 119, 136, 164, 238, 287, 328, 476, 541, 574, 697, 952, 1082, 1148, 1394, 2164, 2296, 2788, 3787, 4328, 4879, 5576, 7574, 9197, 9758, 15148, 18394, 19516, 22181, 30296, 36788, 39032, 44362, 64379, 73576, 88724, 128758, 155267, 177448, 257516, 310534, 377077, 515032, 621068, 754154, 1242136, 1508308, 2639539, 3016616, 5279078, 10558156, 21116312]

約数ペア:

[(1, 21116312), (2, 10558156), (4, 5279078), (7, 3016616), (8, 2639539), (14, 1508308), (17, 1242136), (28, 754154), (34, 621068), (41, 515032), (56, 377077), (68, 310534), (82, 257516), (119, 177448), (136, 155267), (164, 128758), (238, 88724), (287, 73576), (328, 64379), (476, 44362), (541, 39032), (574, 36788), (697, 30296), (952, 22181), (1082, 19516), (1148, 18394), (1394, 15148), (2164, 9758), (2296, 9197), (2788, 7574), (3787, 5576), (4328, 4879)]