21708218

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{197}}^1\times {\mathrm{463}}^1$

素因数の和:686

約数の個数: 32

約数和(自身を含む): 39688704

約数和(自身を除く): 17980486

約数列:

[1, 2, 7, 14, 17, 34, 119, 197, 238, 394, 463, 926, 1379, 2758, 3241, 3349, 6482, 6698, 7871, 15742, 23443, 46886, 55097, 91211, 110194, 182422, 638477, 1276954, 1550587, 3101174, 10854109, 21708218]

約数ペア:

[(1, 21708218), (2, 10854109), (7, 3101174), (14, 1550587), (17, 1276954), (34, 638477), (119, 182422), (197, 110194), (238, 91211), (394, 55097), (463, 46886), (926, 23443), (1379, 15742), (2758, 7871), (3241, 6698), (3349, 6482)]