19997666440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{1547807}}^1$

素因数の和:1547854

約数の個数: 64

約数和(自身を含む): 50148979200

約数和(自身を除く): 30151312760

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 34, 38, 40, 68, 76, 85, 95, 136, 152, 170, 190, 323, 340, 380, 646, 680, 760, 1292, 1615, 2584, 3230, 6460, 12920, 1547807, 3095614, 6191228, 7739035, 12382456, 15478070, 26312719, 29408333, 30956140, 52625438, 58816666, 61912280, 105250876, 117633332, 131563595, 147041665, 210501752, 235266664, 263127190, 294083330, 499941661, 526254380, 588166660, 999883322, 1052508760, 1176333320, 1999766644, 2499708305, 3999533288, 4999416610, 9998833220, 19997666440]

約数ペア:

[(1, 19997666440), (2, 9998833220), (4, 4999416610), (5, 3999533288), (8, 2499708305), (10, 1999766644), (17, 1176333320), (19, 1052508760), (20, 999883322), (34, 588166660), (38, 526254380), (40, 499941661), (68, 294083330), (76, 263127190), (85, 235266664), (95, 210501752), (136, 147041665), (152, 131563595), (170, 117633332), (190, 105250876), (323, 61912280), (340, 58816666), (380, 52625438), (646, 30956140), (680, 29408333), (760, 26312719), (1292, 15478070), (1615, 12382456), (2584, 7739035), (3230, 6191228), (6460, 3095614), (12920, 1547807)]