21535304

素因数分解:

$2^3\times 7^2\times {\mathrm{137}}^1\times {\mathrm{401}}^1$

素因数の和:558

約数の個数: 48

約数和(自身を含む): 47431980

約数和(自身を除く): 25896676

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 137, 196, 274, 392, 401, 548, 802, 959, 1096, 1604, 1918, 2807, 3208, 3836, 5614, 6713, 7672, 11228, 13426, 19649, 22456, 26852, 39298, 53704, 54937, 78596, 109874, 157192, 219748, 384559, 439496, 769118, 1538236, 2691913, 3076472, 5383826, 10767652, 21535304]

約数ペア:

[(1, 21535304), (2, 10767652), (4, 5383826), (7, 3076472), (8, 2691913), (14, 1538236), (28, 769118), (49, 439496), (56, 384559), (98, 219748), (137, 157192), (196, 109874), (274, 78596), (392, 54937), (401, 53704), (548, 39298), (802, 26852), (959, 22456), (1096, 19649), (1604, 13426), (1918, 11228), (2807, 7672), (3208, 6713), (3836, 5614)]