20422815

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{353}}^1$

素因数の和:416

約数の個数: 64

約数和(自身を含む): 40780800

約数和(自身を除く): 20357985

約数列:

[1, 3, 5, 7, 15, 19, 21, 29, 35, 57, 87, 95, 105, 133, 145, 203, 285, 353, 399, 435, 551, 609, 665, 1015, 1059, 1653, 1765, 1995, 2471, 2755, 3045, 3857, 5295, 6707, 7413, 8265, 10237, 11571, 12355, 19285, 20121, 30711, 33535, 37065, 46949, 51185, 57855, 71659, 100605, 140847, 153555, 194503, 214977, 234745, 358295, 583509, 704235, 972515, 1074885, 1361521, 2917545, 4084563, 6807605, 20422815]

約数ペア:

[(1, 20422815), (3, 6807605), (5, 4084563), (7, 2917545), (15, 1361521), (19, 1074885), (21, 972515), (29, 704235), (35, 583509), (57, 358295), (87, 234745), (95, 214977), (105, 194503), (133, 153555), (145, 140847), (203, 100605), (285, 71659), (353, 57855), (399, 51185), (435, 46949), (551, 37065), (609, 33535), (665, 30711), (1015, 20121), (1059, 19285), (1653, 12355), (1765, 11571), (1995, 10237), (2471, 8265), (2755, 7413), (3045, 6707), (3857, 5295)]