21033816

素因数分解:

$2^3\times 3^1\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{643}}^1$

素因数の和:728

約数の個数: 64

約数和(自身を含む): 55641600

約数和(自身を除く): 34607784

約数列:

[1, 2, 3, 4, 6, 8, 12, 24, 29, 47, 58, 87, 94, 116, 141, 174, 188, 232, 282, 348, 376, 564, 643, 696, 1128, 1286, 1363, 1929, 2572, 2726, 3858, 4089, 5144, 5452, 7716, 8178, 10904, 15432, 16356, 18647, 30221, 32712, 37294, 55941, 60442, 74588, 90663, 111882, 120884, 149176, 181326, 223764, 241768, 362652, 447528, 725304, 876409, 1752818, 2629227, 3505636, 5258454, 7011272, 10516908, 21033816]

約数ペア:

[(1, 21033816), (2, 10516908), (3, 7011272), (4, 5258454), (6, 3505636), (8, 2629227), (12, 1752818), (24, 876409), (29, 725304), (47, 447528), (58, 362652), (87, 241768), (94, 223764), (116, 181326), (141, 149176), (174, 120884), (188, 111882), (232, 90663), (282, 74588), (348, 60442), (376, 55941), (564, 37294), (643, 32712), (696, 30221), (1128, 18647), (1286, 16356), (1363, 15432), (1929, 10904), (2572, 8178), (2726, 7716), (3858, 5452), (4089, 5144)]