21168200

素因数分解:

$2^3\times 5^2\times {\mathrm{53}}^1\times {\mathrm{1997}}^1$

素因数の和:2066

約数の個数: 48

約数和(自身を含む): 50169780

約数和(自身を除く): 29001580

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 53, 100, 106, 200, 212, 265, 424, 530, 1060, 1325, 1997, 2120, 2650, 3994, 5300, 7988, 9985, 10600, 15976, 19970, 39940, 49925, 79880, 99850, 105841, 199700, 211682, 399400, 423364, 529205, 846728, 1058410, 2116820, 2646025, 4233640, 5292050, 10584100, 21168200]

約数ペア:

[(1, 21168200), (2, 10584100), (4, 5292050), (5, 4233640), (8, 2646025), (10, 2116820), (20, 1058410), (25, 846728), (40, 529205), (50, 423364), (53, 399400), (100, 211682), (106, 199700), (200, 105841), (212, 99850), (265, 79880), (424, 49925), (530, 39940), (1060, 19970), (1325, 15976), (1997, 10600), (2120, 9985), (2650, 7988), (3994, 5300)]