20171805640

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{181}}^1\times {\mathrm{398023}}^1$

素因数の和:398222

約数の個数: 64

約数和(自身を含む): 52157064960

約数和(自身を除く): 31985259320

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 181, 280, 362, 724, 905, 1267, 1448, 1810, 2534, 3620, 5068, 6335, 7240, 10136, 12670, 25340, 50680, 398023, 796046, 1592092, 1990115, 2786161, 3184184, 3980230, 5572322, 7960460, 11144644, 13930805, 15920920, 22289288, 27861610, 55723220, 72042163, 111446440, 144084326, 288168652, 360210815, 504295141, 576337304, 720421630, 1008590282, 1440843260, 2017180564, 2521475705, 2881686520, 4034361128, 5042951410, 10085902820, 20171805640]

約数ペア:

[(1, 20171805640), (2, 10085902820), (4, 5042951410), (5, 4034361128), (7, 2881686520), (8, 2521475705), (10, 2017180564), (14, 1440843260), (20, 1008590282), (28, 720421630), (35, 576337304), (40, 504295141), (56, 360210815), (70, 288168652), (140, 144084326), (181, 111446440), (280, 72042163), (362, 55723220), (724, 27861610), (905, 22289288), (1267, 15920920), (1448, 13930805), (1810, 11144644), (2534, 7960460), (3620, 5572322), (5068, 3980230), (6335, 3184184), (7240, 2786161), (10136, 1990115), (12670, 1592092), (25340, 796046), (50680, 398023)]