263932990

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{41}}^1\times {\mathrm{1993}}^1$

素因数の和:2077

約数の個数: 64

約数和(自身を含む): 542687040

約数和(自身を除く): 278754050

約数列:

[1, 2, 5, 10, 17, 19, 34, 38, 41, 82, 85, 95, 170, 190, 205, 323, 410, 646, 697, 779, 1394, 1558, 1615, 1993, 3230, 3485, 3895, 3986, 6970, 7790, 9965, 13243, 19930, 26486, 33881, 37867, 66215, 67762, 75734, 81713, 132430, 163426, 169405, 189335, 338810, 378670, 408565, 643739, 817130, 1287478, 1389121, 1552547, 2778242, 3105094, 3218695, 6437390, 6945605, 7762735, 13891210, 15525470, 26393299, 52786598, 131966495, 263932990]

約数ペア:

[(1, 263932990), (2, 131966495), (5, 52786598), (10, 26393299), (17, 15525470), (19, 13891210), (34, 7762735), (38, 6945605), (41, 6437390), (82, 3218695), (85, 3105094), (95, 2778242), (170, 1552547), (190, 1389121), (205, 1287478), (323, 817130), (410, 643739), (646, 408565), (697, 378670), (779, 338810), (1394, 189335), (1558, 169405), (1615, 163426), (1993, 132430), (3230, 81713), (3485, 75734), (3895, 67762), (3986, 66215), (6970, 37867), (7790, 33881), (9965, 26486), (13243, 19930)]