21240730

素因数分解:

$2^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{79}}^1\times {\mathrm{167}}^1$

素因数の和:283

約数の個数: 64

約数和(自身を含む): 46448640

約数和(自身を除く): 25207910

約数列:

[1, 2, 5, 7, 10, 14, 23, 35, 46, 70, 79, 115, 158, 161, 167, 230, 322, 334, 395, 553, 790, 805, 835, 1106, 1169, 1610, 1670, 1817, 2338, 2765, 3634, 3841, 5530, 5845, 7682, 9085, 11690, 12719, 13193, 18170, 19205, 25438, 26386, 26887, 38410, 53774, 63595, 65965, 92351, 127190, 131930, 134435, 184702, 268870, 303439, 461755, 606878, 923510, 1517195, 2124073, 3034390, 4248146, 10620365, 21240730]

約数ペア:

[(1, 21240730), (2, 10620365), (5, 4248146), (7, 3034390), (10, 2124073), (14, 1517195), (23, 923510), (35, 606878), (46, 461755), (70, 303439), (79, 268870), (115, 184702), (158, 134435), (161, 131930), (167, 127190), (230, 92351), (322, 65965), (334, 63595), (395, 53774), (553, 38410), (790, 26887), (805, 26386), (835, 25438), (1106, 19205), (1169, 18170), (1610, 13193), (1670, 12719), (1817, 11690), (2338, 9085), (2765, 7682), (3634, 5845), (3841, 5530)]