81365655

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{79}}^1\times {\mathrm{577}}^1$

素因数の和:688

約数の個数: 64

約数和(自身を含む): 159805440

約数和(自身を除く): 78439785

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 79, 85, 105, 119, 237, 255, 357, 395, 553, 577, 595, 1185, 1343, 1659, 1731, 1785, 2765, 2885, 4029, 4039, 6715, 8295, 8655, 9401, 9809, 12117, 20145, 20195, 28203, 29427, 45583, 47005, 49045, 60585, 68663, 136749, 141015, 147135, 205989, 227915, 319081, 343315, 683745, 774911, 957243, 1029945, 1595405, 2324733, 3874555, 4786215, 5424377, 11623665, 16273131, 27121885, 81365655]

約数ペア:

[(1, 81365655), (3, 27121885), (5, 16273131), (7, 11623665), (15, 5424377), (17, 4786215), (21, 3874555), (35, 2324733), (51, 1595405), (79, 1029945), (85, 957243), (105, 774911), (119, 683745), (237, 343315), (255, 319081), (357, 227915), (395, 205989), (553, 147135), (577, 141015), (595, 136749), (1185, 68663), (1343, 60585), (1659, 49045), (1731, 47005), (1785, 45583), (2765, 29427), (2885, 28203), (4029, 20195), (4039, 20145), (6715, 12117), (8295, 9809), (8655, 9401)]