21616956

素因数分解:

$2^2\times 3^4\times {\mathrm{137}}^1\times {\mathrm{487}}^1$

素因数の和:640

約数の個数: 60

約数和(自身を含む): 57040368

約数和(自身を除く): 35423412

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 137, 162, 274, 324, 411, 487, 548, 822, 974, 1233, 1461, 1644, 1948, 2466, 2922, 3699, 4383, 4932, 5844, 7398, 8766, 11097, 13149, 14796, 17532, 22194, 26298, 39447, 44388, 52596, 66719, 78894, 133438, 157788, 200157, 266876, 400314, 600471, 800628, 1200942, 1801413, 2401884, 3602826, 5404239, 7205652, 10808478, 21616956]

約数ペア:

[(1, 21616956), (2, 10808478), (3, 7205652), (4, 5404239), (6, 3602826), (9, 2401884), (12, 1801413), (18, 1200942), (27, 800628), (36, 600471), (54, 400314), (81, 266876), (108, 200157), (137, 157788), (162, 133438), (274, 78894), (324, 66719), (411, 52596), (487, 44388), (548, 39447), (822, 26298), (974, 22194), (1233, 17532), (1461, 14796), (1644, 13149), (1948, 11097), (2466, 8766), (2922, 7398), (3699, 5844), (4383, 4932)]