28085020

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{43}}^1\times {\mathrm{113}}^1$

素因数の和:199

約数の個数: 72

約数和(自身を含む): 64676304

約数和(自身を除く): 36591284

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 43, 68, 85, 86, 113, 170, 172, 215, 226, 289, 340, 430, 452, 565, 578, 731, 860, 1130, 1156, 1445, 1462, 1921, 2260, 2890, 2924, 3655, 3842, 4859, 5780, 7310, 7684, 9605, 9718, 12427, 14620, 19210, 19436, 24295, 24854, 32657, 38420, 48590, 49708, 62135, 65314, 82603, 97180, 124270, 130628, 163285, 165206, 248540, 326570, 330412, 413015, 653140, 826030, 1404251, 1652060, 2808502, 5617004, 7021255, 14042510, 28085020]

約数ペア:

[(1, 28085020), (2, 14042510), (4, 7021255), (5, 5617004), (10, 2808502), (17, 1652060), (20, 1404251), (34, 826030), (43, 653140), (68, 413015), (85, 330412), (86, 326570), (113, 248540), (170, 165206), (172, 163285), (215, 130628), (226, 124270), (289, 97180), (340, 82603), (430, 65314), (452, 62135), (565, 49708), (578, 48590), (731, 38420), (860, 32657), (1130, 24854), (1156, 24295), (1445, 19436), (1462, 19210), (1921, 14620), (2260, 12427), (2890, 9718), (2924, 9605), (3655, 7684), (3842, 7310), (4859, 5780)]