28172740

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{47}}^1$

素因数の和:157

約数の個数: 96

約数和(自身を含む): 67060224

約数和(自身を除く): 38887484

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 41, 43, 47, 68, 82, 85, 86, 94, 164, 170, 172, 188, 205, 215, 235, 340, 410, 430, 470, 697, 731, 799, 820, 860, 940, 1394, 1462, 1598, 1763, 1927, 2021, 2788, 2924, 3196, 3485, 3526, 3655, 3854, 3995, 4042, 6970, 7052, 7310, 7708, 7990, 8084, 8815, 9635, 10105, 13940, 14620, 15980, 17630, 19270, 20210, 29971, 32759, 34357, 35260, 38540, 40420, 59942, 65518, 68714, 82861, 119884, 131036, 137428, 149855, 163795, 165722, 171785, 299710, 327590, 331444, 343570, 414305, 599420, 655180, 687140, 828610, 1408637, 1657220, 2817274, 5634548, 7043185, 14086370, 28172740]

約数ペア:

[(1, 28172740), (2, 14086370), (4, 7043185), (5, 5634548), (10, 2817274), (17, 1657220), (20, 1408637), (34, 828610), (41, 687140), (43, 655180), (47, 599420), (68, 414305), (82, 343570), (85, 331444), (86, 327590), (94, 299710), (164, 171785), (170, 165722), (172, 163795), (188, 149855), (205, 137428), (215, 131036), (235, 119884), (340, 82861), (410, 68714), (430, 65518), (470, 59942), (697, 40420), (731, 38540), (799, 35260), (820, 34357), (860, 32759), (940, 29971), (1394, 20210), (1462, 19270), (1598, 17630), (1763, 15980), (1927, 14620), (2021, 13940), (2788, 10105), (2924, 9635), (3196, 8815), (3485, 8084), (3526, 7990), (3655, 7708), (3854, 7310), (3995, 7052), (4042, 6970)]