20797035

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{191}}^1$

素因数の和:284

約数の個数: 64

約数和(自身を含む): 41140224

約数和(自身を除く): 20343189

約数列:

[1, 3, 5, 7, 15, 17, 21, 35, 51, 61, 85, 105, 119, 183, 191, 255, 305, 357, 427, 573, 595, 915, 955, 1037, 1281, 1337, 1785, 2135, 2865, 3111, 3247, 4011, 5185, 6405, 6685, 7259, 9741, 11651, 15555, 16235, 20055, 21777, 22729, 34953, 36295, 48705, 58255, 68187, 81557, 108885, 113645, 174765, 198067, 244671, 340935, 407785, 594201, 990335, 1223355, 1386469, 2971005, 4159407, 6932345, 20797035]

約数ペア:

[(1, 20797035), (3, 6932345), (5, 4159407), (7, 2971005), (15, 1386469), (17, 1223355), (21, 990335), (35, 594201), (51, 407785), (61, 340935), (85, 244671), (105, 198067), (119, 174765), (183, 113645), (191, 108885), (255, 81557), (305, 68187), (357, 58255), (427, 48705), (573, 36295), (595, 34953), (915, 22729), (955, 21777), (1037, 20055), (1281, 16235), (1337, 15555), (1785, 11651), (2135, 9741), (2865, 7259), (3111, 6685), (3247, 6405), (4011, 5185)]