21350901

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{157}}^1\times {\mathrm{317}}^1$

素因数の和:501

約数の個数: 32

約数和(自身を含む): 33763968

約数和(自身を除く): 12413067

約数列:

[1, 3, 11, 13, 33, 39, 143, 157, 317, 429, 471, 951, 1727, 2041, 3487, 4121, 5181, 6123, 10461, 12363, 22451, 45331, 49769, 67353, 135993, 149307, 547459, 646997, 1642377, 1940991, 7116967, 21350901]

約数ペア:

[(1, 21350901), (3, 7116967), (11, 1940991), (13, 1642377), (33, 646997), (39, 547459), (143, 149307), (157, 135993), (317, 67353), (429, 49769), (471, 45331), (951, 22451), (1727, 12363), (2041, 10461), (3487, 6123), (4121, 5181)]