20018464

素因数分解:

$2^5\times {\mathrm{23}}^1\times {\mathrm{59}}^1\times {\mathrm{461}}^1$

素因数の和:553

約数の個数: 48

約数和(自身を含む): 41912640

約数和(自身を除く): 21894176

約数列:

[1, 2, 4, 8, 16, 23, 32, 46, 59, 92, 118, 184, 236, 368, 461, 472, 736, 922, 944, 1357, 1844, 1888, 2714, 3688, 5428, 7376, 10603, 10856, 14752, 21206, 21712, 27199, 42412, 43424, 54398, 84824, 108796, 169648, 217592, 339296, 435184, 625577, 870368, 1251154, 2502308, 5004616, 10009232, 20018464]

約数ペア:

[(1, 20018464), (2, 10009232), (4, 5004616), (8, 2502308), (16, 1251154), (23, 870368), (32, 625577), (46, 435184), (59, 339296), (92, 217592), (118, 169648), (184, 108796), (236, 84824), (368, 54398), (461, 43424), (472, 42412), (736, 27199), (922, 21712), (944, 21206), (1357, 14752), (1844, 10856), (1888, 10603), (2714, 7376), (3688, 5428)]