21676212

素因数分解:

$2^2\times 3^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{557}}^1$

素因数の和:637

約数の個数: 72

約数和(自身を含む): 58496256

約数和(自身を除く): 36820044

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 23, 36, 46, 47, 69, 92, 94, 138, 141, 188, 207, 276, 282, 414, 423, 557, 564, 828, 846, 1081, 1114, 1671, 1692, 2162, 2228, 3243, 3342, 4324, 5013, 6486, 6684, 9729, 10026, 12811, 12972, 19458, 20052, 25622, 26179, 38433, 38916, 51244, 52358, 76866, 78537, 104716, 115299, 153732, 157074, 230598, 235611, 314148, 461196, 471222, 602117, 942444, 1204234, 1806351, 2408468, 3612702, 5419053, 7225404, 10838106, 21676212]

約数ペア:

[(1, 21676212), (2, 10838106), (3, 7225404), (4, 5419053), (6, 3612702), (9, 2408468), (12, 1806351), (18, 1204234), (23, 942444), (36, 602117), (46, 471222), (47, 461196), (69, 314148), (92, 235611), (94, 230598), (138, 157074), (141, 153732), (188, 115299), (207, 104716), (276, 78537), (282, 76866), (414, 52358), (423, 51244), (557, 38916), (564, 38433), (828, 26179), (846, 25622), (1081, 20052), (1114, 19458), (1671, 12972), (1692, 12811), (2162, 10026), (2228, 9729), (3243, 6684), (3342, 6486), (4324, 5013)]