21707538

素因数分解:

$2^1\times 3^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{487}}^1$

素因数の和:551

約数の個数: 64

約数和(自身を含む): 50595840

約数和(自身を除く): 28888302

約数列:

[1, 2, 3, 6, 17, 19, 23, 34, 38, 46, 51, 57, 69, 102, 114, 138, 323, 391, 437, 487, 646, 782, 874, 969, 974, 1173, 1311, 1461, 1938, 2346, 2622, 2922, 7429, 8279, 9253, 11201, 14858, 16558, 18506, 22287, 22402, 24837, 27759, 33603, 44574, 49674, 55518, 67206, 157301, 190417, 212819, 314602, 380834, 425638, 471903, 571251, 638457, 943806, 1142502, 1276914, 3617923, 7235846, 10853769, 21707538]

約数ペア:

[(1, 21707538), (2, 10853769), (3, 7235846), (6, 3617923), (17, 1276914), (19, 1142502), (23, 943806), (34, 638457), (38, 571251), (46, 471903), (51, 425638), (57, 380834), (69, 314602), (102, 212819), (114, 190417), (138, 157301), (323, 67206), (391, 55518), (437, 49674), (487, 44574), (646, 33603), (782, 27759), (874, 24837), (969, 22402), (974, 22287), (1173, 18506), (1311, 16558), (1461, 14858), (1938, 11201), (2346, 9253), (2622, 8279), (2922, 7429)]