220791818

素因数分解:

$2^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{61}}^1\times {\mathrm{431}}^1$

素因数の和:543

約数の個数: 64

約数和(自身を含む): 404974080

約数和(自身を除く): 184182262

約数列:

[1, 2, 13, 17, 19, 26, 34, 38, 61, 122, 221, 247, 323, 431, 442, 494, 646, 793, 862, 1037, 1159, 1586, 2074, 2318, 4199, 5603, 7327, 8189, 8398, 11206, 13481, 14654, 15067, 16378, 19703, 26291, 26962, 30134, 39406, 52582, 95251, 106457, 139213, 190502, 212914, 256139, 278426, 341783, 446947, 499529, 512278, 683566, 893894, 999058, 1809769, 3619538, 5810311, 6493877, 8491993, 11620622, 12987754, 16983986, 110395909, 220791818]

約数ペア:

[(1, 220791818), (2, 110395909), (13, 16983986), (17, 12987754), (19, 11620622), (26, 8491993), (34, 6493877), (38, 5810311), (61, 3619538), (122, 1809769), (221, 999058), (247, 893894), (323, 683566), (431, 512278), (442, 499529), (494, 446947), (646, 341783), (793, 278426), (862, 256139), (1037, 212914), (1159, 190502), (1586, 139213), (2074, 106457), (2318, 95251), (4199, 52582), (5603, 39406), (7327, 30134), (8189, 26962), (8398, 26291), (11206, 19703), (13481, 16378), (14654, 15067)]