17990973

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{1997}}^1$

素因数の和:2034

約数の個数: 48

約数和(自身を含む): 34909056

約数和(自身を除く): 16918083

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 117, 143, 231, 273, 429, 693, 819, 1001, 1287, 1997, 3003, 5991, 9009, 13979, 17973, 21967, 25961, 41937, 65901, 77883, 125811, 153769, 181727, 197703, 233649, 285571, 461307, 545181, 856713, 1383921, 1635543, 1998997, 2570139, 5996991, 17990973]

約数ペア:

[(1, 17990973), (3, 5996991), (7, 2570139), (9, 1998997), (11, 1635543), (13, 1383921), (21, 856713), (33, 545181), (39, 461307), (63, 285571), (77, 233649), (91, 197703), (99, 181727), (117, 153769), (143, 125811), (231, 77883), (273, 65901), (429, 41937), (693, 25961), (819, 21967), (1001, 17973), (1287, 13979), (1997, 9009), (3003, 5991)]