28980765

素因数分解:

$3^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{127}}^1\times {\mathrm{461}}^1$

素因数の和:610

約数の個数: 48

約数和(自身を含む): 55351296

約数和(自身を除く): 26370531

約数列:

[1, 3, 5, 9, 11, 15, 33, 45, 55, 99, 127, 165, 381, 461, 495, 635, 1143, 1383, 1397, 1905, 2305, 4149, 4191, 5071, 5715, 6915, 6985, 12573, 15213, 20745, 20955, 25355, 45639, 58547, 62865, 76065, 175641, 228195, 292735, 526923, 644017, 878205, 1932051, 2634615, 3220085, 5796153, 9660255, 28980765]

約数ペア:

[(1, 28980765), (3, 9660255), (5, 5796153), (9, 3220085), (11, 2634615), (15, 1932051), (33, 878205), (45, 644017), (55, 526923), (99, 292735), (127, 228195), (165, 175641), (381, 76065), (461, 62865), (495, 58547), (635, 45639), (1143, 25355), (1383, 20955), (1397, 20745), (1905, 15213), (2305, 12573), (4149, 6985), (4191, 6915), (5071, 5715)]