15981021

素因数分解:

$3^2\times 7^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{269}}^1$

素因数の和:346

約数の個数: 48

約数和(自身を含む): 28304640

約数和(自身を除く): 12323619

約数列:

[1, 3, 7, 9, 21, 23, 41, 63, 69, 123, 161, 207, 269, 287, 369, 483, 807, 861, 943, 1449, 1883, 2421, 2583, 2829, 5649, 6187, 6601, 8487, 11029, 16947, 18561, 19803, 33087, 43309, 55683, 59409, 77203, 99261, 129927, 231609, 253667, 389781, 694827, 761001, 1775669, 2283003, 5327007, 15981021]

約数ペア:

[(1, 15981021), (3, 5327007), (7, 2283003), (9, 1775669), (21, 761001), (23, 694827), (41, 389781), (63, 253667), (69, 231609), (123, 129927), (161, 99261), (207, 77203), (269, 59409), (287, 55683), (369, 43309), (483, 33087), (807, 19803), (861, 18561), (943, 16947), (1449, 11029), (1883, 8487), (2421, 6601), (2583, 6187), (2829, 5649)]