28686140

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{17}}^2\times {\mathrm{709}}^1$

素因数の和:759

約数の個数: 72

約数和(自身を含む): 73237920

約数和(自身を除く): 44551780

約数列:

[1, 2, 4, 5, 7, 10, 14, 17, 20, 28, 34, 35, 68, 70, 85, 119, 140, 170, 238, 289, 340, 476, 578, 595, 709, 1156, 1190, 1418, 1445, 2023, 2380, 2836, 2890, 3545, 4046, 4963, 5780, 7090, 8092, 9926, 10115, 12053, 14180, 19852, 20230, 24106, 24815, 40460, 48212, 49630, 60265, 84371, 99260, 120530, 168742, 204901, 241060, 337484, 409802, 421855, 819604, 843710, 1024505, 1434307, 1687420, 2049010, 2868614, 4098020, 5737228, 7171535, 14343070, 28686140]

約数ペア:

[(1, 28686140), (2, 14343070), (4, 7171535), (5, 5737228), (7, 4098020), (10, 2868614), (14, 2049010), (17, 1687420), (20, 1434307), (28, 1024505), (34, 843710), (35, 819604), (68, 421855), (70, 409802), (85, 337484), (119, 241060), (140, 204901), (170, 168742), (238, 120530), (289, 99260), (340, 84371), (476, 60265), (578, 49630), (595, 48212), (709, 40460), (1156, 24815), (1190, 24106), (1418, 20230), (1445, 19852), (2023, 14180), (2380, 12053), (2836, 10115), (2890, 9926), (3545, 8092), (4046, 7090), (4963, 5780)]