291211921

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{109}}^1\times {\mathrm{157}}^1$

素因数の和:314

約数の個数: 64

約数和(自身を含む): 420456960

約数和(自身を除く): 129245039

約数列:

[1, 7, 11, 13, 17, 77, 91, 109, 119, 143, 157, 187, 221, 763, 1001, 1099, 1199, 1309, 1417, 1547, 1727, 1853, 2041, 2431, 2669, 8393, 9919, 12089, 12971, 14287, 15587, 17017, 17113, 18683, 20383, 22451, 24089, 29359, 34697, 109109, 119791, 142681, 157157, 168623, 188243, 205513, 222469, 242879, 264979, 290921, 381667, 1317701, 1557283, 1854853, 2036447, 2447159, 2671669, 3200131, 3781973, 17130113, 22400917, 26473811, 41601703, 291211921]

約数ペア:

[(1, 291211921), (7, 41601703), (11, 26473811), (13, 22400917), (17, 17130113), (77, 3781973), (91, 3200131), (109, 2671669), (119, 2447159), (143, 2036447), (157, 1854853), (187, 1557283), (221, 1317701), (763, 381667), (1001, 290921), (1099, 264979), (1199, 242879), (1309, 222469), (1417, 205513), (1547, 188243), (1727, 168623), (1853, 157157), (2041, 142681), (2431, 119791), (2669, 109109), (8393, 34697), (9919, 29359), (12089, 24089), (12971, 22451), (14287, 20383), (15587, 18683), (17017, 17113)]