28541895

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 52462080

約数和(自身を除く): 23920185

約数列:

[1, 3, 5, 15, 17, 19, 43, 51, 57, 85, 95, 129, 137, 215, 255, 285, 323, 411, 645, 685, 731, 817, 969, 1615, 2055, 2193, 2329, 2451, 2603, 3655, 4085, 4845, 5891, 6987, 7809, 10965, 11645, 12255, 13015, 13889, 17673, 29455, 34935, 39045, 41667, 44251, 69445, 88365, 100147, 111929, 132753, 208335, 221255, 300441, 335787, 500735, 559645, 663765, 1502205, 1678935, 1902793, 5708379, 9513965, 28541895]

約数ペア:

[(1, 28541895), (3, 9513965), (5, 5708379), (15, 1902793), (17, 1678935), (19, 1502205), (43, 663765), (51, 559645), (57, 500735), (85, 335787), (95, 300441), (129, 221255), (137, 208335), (215, 132753), (255, 111929), (285, 100147), (323, 88365), (411, 69445), (645, 44251), (685, 41667), (731, 39045), (817, 34935), (969, 29455), (1615, 17673), (2055, 13889), (2193, 13015), (2329, 12255), (2451, 11645), (2603, 10965), (3655, 7809), (4085, 6987), (4845, 5891)]