21003056

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{59}}^1\times {\mathrm{1171}}^1$

素因数の和:1257

約数の個数: 40

約数和(自身を含む): 43598400

約数和(自身を除く): 22595344

約数列:

[1, 2, 4, 8, 16, 19, 38, 59, 76, 118, 152, 236, 304, 472, 944, 1121, 1171, 2242, 2342, 4484, 4684, 8968, 9368, 17936, 18736, 22249, 44498, 69089, 88996, 138178, 177992, 276356, 355984, 552712, 1105424, 1312691, 2625382, 5250764, 10501528, 21003056]

約数ペア:

[(1, 21003056), (2, 10501528), (4, 5250764), (8, 2625382), (16, 1312691), (19, 1105424), (38, 552712), (59, 355984), (76, 276356), (118, 177992), (152, 138178), (236, 88996), (304, 69089), (472, 44498), (944, 22249), (1121, 18736), (1171, 17936), (2242, 9368), (2342, 8968), (4484, 4684)]