1981115605

素因数分解:

$5^1\times 7^1\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{61}}^1\times {\mathrm{809}}^1$

素因数の和:950

約数の個数: 64

約数和(自身を含む): 2931240960

約数和(自身を除く): 950125355

約数列:

[1, 5, 7, 31, 35, 37, 61, 155, 185, 217, 259, 305, 427, 809, 1085, 1147, 1295, 1891, 2135, 2257, 4045, 5663, 5735, 8029, 9455, 11285, 13237, 15799, 25079, 28315, 29933, 40145, 49349, 66185, 69967, 78995, 125395, 149665, 175553, 209531, 246745, 345443, 349835, 489769, 877765, 927923, 1047655, 1529819, 1727215, 1825913, 2448845, 4639615, 6495461, 7649095, 9129565, 10708733, 12781391, 32477305, 53543665, 56603303, 63906955, 283016515, 396223121, 1981115605]

約数ペア:

[(1, 1981115605), (5, 396223121), (7, 283016515), (31, 63906955), (35, 56603303), (37, 53543665), (61, 32477305), (155, 12781391), (185, 10708733), (217, 9129565), (259, 7649095), (305, 6495461), (427, 4639615), (809, 2448845), (1085, 1825913), (1147, 1727215), (1295, 1529819), (1891, 1047655), (2135, 927923), (2257, 877765), (4045, 489769), (5663, 349835), (5735, 345443), (8029, 246745), (9455, 209531), (11285, 175553), (13237, 149665), (15799, 125395), (25079, 78995), (28315, 69967), (29933, 66185), (40145, 49349)]