81505620

素因数分解:

$2^2\times 3^2\times 5^1\times 7^2\times {\mathrm{9241}}^1$

素因数の和:9270

約数の個数: 108

約数和(自身を含む): 287629524

約数和(自身を除く): 206123904

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 28, 30, 35, 36, 42, 45, 49, 60, 63, 70, 84, 90, 98, 105, 126, 140, 147, 180, 196, 210, 245, 252, 294, 315, 420, 441, 490, 588, 630, 735, 882, 980, 1260, 1470, 1764, 2205, 2940, 4410, 8820, 9241, 18482, 27723, 36964, 46205, 55446, 64687, 83169, 92410, 110892, 129374, 138615, 166338, 184820, 194061, 258748, 277230, 323435, 332676, 388122, 415845, 452809, 554460, 582183, 646870, 776244, 831690, 905618, 970305, 1164366, 1293740, 1358427, 1663380, 1811236, 1940610, 2264045, 2328732, 2716854, 2910915, 3881220, 4075281, 4528090, 5433708, 5821830, 6792135, 8150562, 9056180, 11643660, 13584270, 16301124, 20376405, 27168540, 40752810, 81505620]

約数ペア:

[(1, 81505620), (2, 40752810), (3, 27168540), (4, 20376405), (5, 16301124), (6, 13584270), (7, 11643660), (9, 9056180), (10, 8150562), (12, 6792135), (14, 5821830), (15, 5433708), (18, 4528090), (20, 4075281), (21, 3881220), (28, 2910915), (30, 2716854), (35, 2328732), (36, 2264045), (42, 1940610), (45, 1811236), (49, 1663380), (60, 1358427), (63, 1293740), (70, 1164366), (84, 970305), (90, 905618), (98, 831690), (105, 776244), (126, 646870), (140, 582183), (147, 554460), (180, 452809), (196, 415845), (210, 388122), (245, 332676), (252, 323435), (294, 277230), (315, 258748), (420, 194061), (441, 184820), (490, 166338), (588, 138615), (630, 129374), (735, 110892), (882, 92410), (980, 83169), (1260, 64687), (1470, 55446), (1764, 46205), (2205, 36964), (2940, 27723), (4410, 18482), (8820, 9241)]