21087514

素因数分解:

$2^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{251}}^1\times {\mathrm{353}}^1$

素因数の和:630

約数の個数: 32

約数和(自身を含む): 38537856

約数和(自身を除く): 17450342

約数列:

[1, 2, 7, 14, 17, 34, 119, 238, 251, 353, 502, 706, 1757, 2471, 3514, 4267, 4942, 6001, 8534, 12002, 29869, 42007, 59738, 84014, 88603, 177206, 620221, 1240442, 1506251, 3012502, 10543757, 21087514]

約数ペア:

[(1, 21087514), (2, 10543757), (7, 3012502), (14, 1506251), (17, 1240442), (34, 620221), (119, 177206), (238, 88603), (251, 84014), (353, 59738), (502, 42007), (706, 29869), (1757, 12002), (2471, 8534), (3514, 6001), (4267, 4942)]