666858987

素因数分解:

$3^4\times {\mathrm{23}}^2\times {\mathrm{79}}^1\times {\mathrm{197}}^1$

素因数の和:334

約数の個数: 60

約数和(自身を含む): 1059901920

約数和(自身を除く): 393042933

約数列:

[1, 3, 9, 23, 27, 69, 79, 81, 197, 207, 237, 529, 591, 621, 711, 1587, 1773, 1817, 1863, 2133, 4531, 4761, 5319, 5451, 6399, 13593, 14283, 15563, 15957, 16353, 40779, 41791, 42849, 46689, 49059, 104213, 122337, 125373, 140067, 147177, 312639, 357949, 367011, 376119, 420201, 937917, 1073847, 1128357, 1260603, 2813751, 3221541, 3385071, 8232827, 8441253, 9664623, 24698481, 28993869, 74095443, 222286329, 666858987]

約数ペア:

[(1, 666858987), (3, 222286329), (9, 74095443), (23, 28993869), (27, 24698481), (69, 9664623), (79, 8441253), (81, 8232827), (197, 3385071), (207, 3221541), (237, 2813751), (529, 1260603), (591, 1128357), (621, 1073847), (711, 937917), (1587, 420201), (1773, 376119), (1817, 367011), (1863, 357949), (2133, 312639), (4531, 147177), (4761, 140067), (5319, 125373), (5451, 122337), (6399, 104213), (13593, 49059), (14283, 46689), (15563, 42849), (15957, 41791), (16353, 40779)]