21390408

素因数分解:

$2^3\times 3^2\times {\mathrm{13}}^1\times {\mathrm{22853}}^1$

素因数の和:22878

約数の個数: 48

約数和(自身を含む): 62391420

約数和(自身を除く): 41001012

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 36, 39, 52, 72, 78, 104, 117, 156, 234, 312, 468, 936, 22853, 45706, 68559, 91412, 137118, 182824, 205677, 274236, 297089, 411354, 548472, 594178, 822708, 891267, 1188356, 1645416, 1782534, 2376712, 2673801, 3565068, 5347602, 7130136, 10695204, 21390408]

約数ペア:

[(1, 21390408), (2, 10695204), (3, 7130136), (4, 5347602), (6, 3565068), (8, 2673801), (9, 2376712), (12, 1782534), (13, 1645416), (18, 1188356), (24, 891267), (26, 822708), (36, 594178), (39, 548472), (52, 411354), (72, 297089), (78, 274236), (104, 205677), (117, 182824), (156, 137118), (234, 91412), (312, 68559), (468, 45706), (936, 22853)]