28777455

素因数分解:

$3^2\times 5^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{421}}^1$

素因数の和:477

約数の個数: 72

約数和(自身を含む): 60038784

約数和(自身を除く): 31261329

約数列:

[1, 3, 5, 7, 9, 15, 21, 31, 35, 45, 49, 63, 93, 105, 147, 155, 217, 245, 279, 315, 421, 441, 465, 651, 735, 1085, 1263, 1395, 1519, 1953, 2105, 2205, 2947, 3255, 3789, 4557, 6315, 7595, 8841, 9765, 13051, 13671, 14735, 18945, 20629, 22785, 26523, 39153, 44205, 61887, 65255, 68355, 91357, 103145, 117459, 132615, 185661, 195765, 274071, 309435, 456785, 587295, 639499, 822213, 928305, 1370355, 1918497, 3197495, 4111065, 5755491, 9592485, 28777455]

約数ペア:

[(1, 28777455), (3, 9592485), (5, 5755491), (7, 4111065), (9, 3197495), (15, 1918497), (21, 1370355), (31, 928305), (35, 822213), (45, 639499), (49, 587295), (63, 456785), (93, 309435), (105, 274071), (147, 195765), (155, 185661), (217, 132615), (245, 117459), (279, 103145), (315, 91357), (421, 68355), (441, 65255), (465, 61887), (651, 44205), (735, 39153), (1085, 26523), (1263, 22785), (1395, 20629), (1519, 18945), (1953, 14735), (2105, 13671), (2205, 13051), (2947, 9765), (3255, 8841), (3789, 7595), (4557, 6315)]